1,442
1,442 is a composite number, even, a calendar year.
Historical context — 1442 AD
Calendar year
Year 1442 (MCDXLII) was a common year starting on Monday of the Julian calendar.
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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
-
Saturday
January 1, 1442
- Ended on
-
Saturday
December 31, 1442
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1440s
1440–1449
- Century
-
15th century
1401–1500
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
584
584 years before 2026.
In other calendars
- Hebrew
-
5202 / 5203 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
845 / 846 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Dog
Sexagenary cycle position 59 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1985 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
820 / 821 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1434 / 1435 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1364 / 1363 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 7 × 103
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand four hundred forty-two
- Ordinal
- 1442nd
- Roman numeral
- MCDXLII
- Binary
- 10110100010
- Octal
- 2642
- Hexadecimal
- 0x5A2
- Base64
- BaI=
- One's complement
- 64,093 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵αυμβʹ
- Mayan (base 20)
- 𝋣·𝋬·𝋢
- Chinese
- 一千四百四十二
- Chinese (financial)
- 壹仟肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,442 = 2
- e — Euler's number (e)
- Digit 1,442 = 6
- φ — Golden ratio (φ)
- Digit 1,442 = 8
- √2 — Pythagoras's (√2)
- Digit 1,442 = 0
- ln 2 — Natural log of 2
- Digit 1,442 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,442 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1442, here are decompositions:
- 3 + 1439 = 1442
- 13 + 1429 = 1442
- 19 + 1423 = 1442
- 43 + 1399 = 1442
- 61 + 1381 = 1442
- 139 + 1303 = 1442
- 151 + 1291 = 1442
- 163 + 1279 = 1442
Showing the first eight; more decompositions exist.
UTF-8 encoding: D6 A2 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.162.
- Address
- 0.0.5.162
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.162
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1442 first appears in π at position 2,763 of the decimal expansion (the 2,763ordinal-suffix:rd 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.