Number

1,422

1,422 is a composite number, even, a calendar year.

1,422 (one thousand four hundred twenty-two) is an even 4-digit number. It is a composite number with 12 divisors, and factors as 2 × 3² × 79. Its proper divisors sum to 1,698, more than the number itself, making it an abundant number. Written other ways, in Roman numerals it is MCDXXII and in binary, 10110001110.

Abundant Number Arithmetic Number Cube-Free Evil Number Harshad / Niven Recamán's Sequence Semiperfect Number Year

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

1,410 1,411 1,412 1,413 1,414 1,415 1,416 1,417 1,418 1,419 1,420 1,421 1,422 1,423 1,424 1,425 1,426 1,427 1,428 1,429 1,430 1,431 1,432 1,433 1,434

less more

Historical context — 1422 AD

Calendar year

Year 1422 (MCDXXII) was a common year starting on Thursday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Tuesday
January 1, 1422
Ended on: Tuesday
December 31, 1422
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 1420s
1420–1429
Century: 15th century
1401–1500
Millennium: 2nd millennium
1001–2000
Years ago: 604
604 years before 2026.

In other calendars

Hebrew: 5182 / 5183 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 824 / 826 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Tiger
Sexagenary cycle position 39 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1965 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 800 / 801 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1414 / 1415 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1344 / 1343 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 4
Digit sum: 9
Digit product: 16
Digital root: 9
Palindrome: No
Bit width: 11 bits
Reversed: 2,241
Recamán's sequence: a(512) = 1,422
Square (n²): 2,022,084
Cube (n³): 2,875,403,448
Divisor count: 12
σ(n) — sum of divisors: 3,120
φ(n) — Euler's totient: 468
Sum of prime factors: 87

Primality

Prime factorization: 2 × 3 ² × 79

Nearest primes: 1,409 (−13) · 1,423 (+1)

Divisors & multiples

All divisors (12)

1 · 2 · 3 · 6 · 9 · 18 · 79 · 158 · 237 · 474 · 711 (half) · 1422

Aliquot sum (sum of proper divisors): 1,698

Factor pairs (a × b = 1,422)

1 × 1422

2 × 711

3 × 474

6 × 237

9 × 158

18 × 79

First multiples

1,422 · 2,844 (double) · 4,266 · 5,688 · 7,110 · 8,532 · 9,954 · 11,376 · 12,798 · 14,220

Sums & aliquot sequence

As consecutive integers: 473 + 474 + 475 354 + 355 + 356 + 357 154 + 155 + … + 162 113 + 114 + … + 124

Aliquot sequence: 1,422 → 1,698 → 1,710 → 2,970 → 5,670 → 11,754 → 13,752 → 23,688 → 51,192 → 94,008 → 141,072 → 223,488 → 427,526 → 272,098 → 147,194 → 73,600 → 116,120 — unresolved within range

Continued fraction of √n

√1,422 = [37; (1, 2, 2, 3, 1, 3, 5, 8, 5, 3, 1, 3, 2, 2, 1, 74)]

Period length 16 — the block in parentheses repeats forever.

Representations

In words: one thousand four hundred twenty-two
Ordinal: 1422nd
Roman numeral: MCDXXII
Binary: 10110001110
Octal: 2616
Hexadecimal: 0x58E
Base64: BY4=
One's complement: 64,113 (16-bit)
Scientific notation: 1.422 × 10³
As a duration: 1,422 s = 23 minutes, 42 seconds

In other bases

ternary (3) 1221200

quaternary (4) 112032

quinary (5) 21142

senary (6) 10330

septenary (7) 4101

nonary (9) 1850

undecimal (11) 1083

duodecimal (12) 9a6

tridecimal (13) 855

tetradecimal (14) 738

pentadecimal (15) 64c

As an angle

1,422° = 3 × 360° + 342°

342° ≈ 5.969 rad

Compass bearing: NNW (north-northwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺
Greek (Milesian): ͵αυκβʹ
Mayan (base 20): 𝋣·𝋫·𝋢
Chinese: 一千四百二十二
Chinese (financial): 壹仟肆佰貳拾貳

In other modern scripts

Eastern Arabic ١٤٢٢ Devanagari १४२२ Bengali ১৪২২ Tamil ௧௪௨௨ Thai ๑๔๒๒ Tibetan ༡༤༢༢ Khmer ១៤២២ Lao ໑໔໒໒ Burmese ၁၄၂၂

Digit at this position in famous constants

π — Pi (π): Digit 1,422 = 2
e — Euler's number (e): Digit 1,422 = 3
φ — Golden ratio (φ): Digit 1,422 = 7
√2 — Pythagoras's (√2): Digit 1,422 = 6
ln 2 — Natural log of 2: Digit 1,422 = 3
γ — Euler-Mascheroni (γ): Digit 1,422 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1422, here are decompositions:

13 + 1409 = 1422
23 + 1399 = 1422
41 + 1381 = 1422
61 + 1361 = 1422
101 + 1321 = 1422
103 + 1319 = 1422
131 + 1291 = 1422
139 + 1283 = 1422

Showing the first eight; more decompositions exist.

Unicode codepoint

Left-Facing Armenian Eternity Sign

U+058E

Other symbol (So)

UTF-8 encoding: D6 8E (2 bytes).

Lookup U+058E on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00058E

RGB(0, 5, 142)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.142.

Address: 0.0.5.142
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.142

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 1,422 Hz is closest to:

Concert pitch (A4 = 440 Hz): F6 (1396.9 Hz, +31¢)
Scientific pitch (C4 = 256 Hz): F♯6 (1448.2 Hz, -32¢)
Baroque pitch (A4 = 415 Hz): F♯6 (1395.9 Hz, +32¢)

Position in π

The digit sequence 1422 first appears in π at position 4,606 of the decimal expansion (the 4,606ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1422 on Pi Search ↗