Number

427

427 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 427 AD

Calendar year

Year 427 (CDXXVII) was a common year starting on Saturday of the Julian calendar.

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Historical context — 427 BC

Calendar year

Year 427 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback 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: Friday
January 1, 427
Ended on: Friday
December 31, 427
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 420s
420–429
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,599
1599 years before 2026.

In other calendars

Hebrew: 4187 / 4188 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Fire zodiac:Rabbit
Sexagenary cycle position 4 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 970 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 419 / 420 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 349 / 348 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 13
Digit product: 56
Digital root: 4
Palindrome: No
Bit width: 9 bits
Reversed: 724
Recamán's sequence: a(4,789) = 427
Square (n²): 182,329
Cube (n³): 77,854,483
Divisor count: 4
σ(n) — sum of divisors: 496
φ(n) — Euler's totient: 360
Sum of prime factors: 68

Primality

Prime factorization: 7 × 61

Nearest primes: 421 (−6) · 431 (+4)

Divisors & multiples

All divisors (4)

1 · 7 · 61 · 427

Aliquot sum (sum of proper divisors): 69

Factor pairs (a × b = 427)

1 × 427

7 × 61

First multiples

427 · 854 (double) · 1,281 · 1,708 · 2,135 · 2,562 · 2,989 · 3,416 · 3,843 · 4,270

Sums & aliquot sequence

As consecutive integers: 213 + 214 58 + 59 + … + 64 24 + 25 + … + 37

Aliquot sequence: 427 → 69 → 27 → 13 → 1 → 0 — terminates at zero

Representations

In words: four hundred twenty-seven
Ordinal: 427th
Roman numeral: CDXXVII
Binary: 110101011
Octal: 653
Hexadecimal: 0x1AB
Base64: Aas=
One's complement: 65,108 (16-bit)

In other bases

ternary (3) 120211

quaternary (4) 12223

quinary (5) 3202

senary (6) 1551

septenary (7) 1150

nonary (9) 524

undecimal (11) 359

duodecimal (12) 2b7

tridecimal (13) 26b

tetradecimal (14) 227

pentadecimal (15) 1d7

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): υκζʹ
Mayan (base 20): 𝋡·𝋡·𝋧
Chinese: 四百二十七
Chinese (financial): 肆佰貳拾柒

In other modern scripts

Eastern Arabic ٤٢٧ Devanagari ४२७ Bengali ৪২৭ Tamil ௪௨௭ Thai ๔๒๗ Tibetan ༤༢༧ Khmer ៤២៧ Lao ໔໒໗ Burmese ၄၂၇

Digit at this position in famous constants

π — Pi (π): Digit 427 = 6
e — Euler's number (e): Digit 427 = 2
φ — Golden ratio (φ): Digit 427 = 0
√2 — Pythagoras's (√2): Digit 427 = 4
ln 2 — Natural log of 2: Digit 427 = 6
γ — Euler-Mascheroni (γ): Digit 427 = 1

Also seen as

Unicode codepoint

Latin Small Letter T With Palatal Hook

U+01AB

Lowercase letter (Ll)

UTF-8 encoding: C6 AB (2 bytes).

Lookup U+01AB on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001AB

RGB(0, 1, 171)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.171.

Address: 0.0.1.171
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.171

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