1,272
1,272 is a composite number, even, a calendar year.
Historical context — 1272 AD
Calendar year
Year 1272 (MCCLXXII) was a leap year starting on Friday of the Julian calendar.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Friday
January 1, 1272
- Ended on
-
Saturday
December 31, 1272
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1270s
1270–1279
- Century
-
13th century
1201–1300
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
754
754 years before 2026.
In other calendars
- Hebrew
-
5032 / 5033 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
670 / 671 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Monkey
Sexagenary cycle position 9 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1815 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
650 / 651 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1264 / 1265 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1194 / 1193 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 12
- Digit product
- 28
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 2,721
- Recamán's sequence
- a(8,444) = 1,272
- Square (n²)
- 1,617,984
- Cube (n³)
- 2,058,075,648
- Divisor count
- 16
- σ(n) — sum of divisors
- 3,240
- φ(n) — Euler's totient
- 416
- Sum of prime factors
- 62
Primality
Prime factorization: 2 3 × 3 × 53
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand two hundred seventy-two
- Ordinal
- 1272nd
- Roman numeral
- MCCLXXII
- Binary
- 10011111000
- Octal
- 2370
- Hexadecimal
- 0x4F8
- Base64
- BPg=
- One's complement
- 64,263 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ασοβʹ
- Mayan (base 20)
- 𝋣·𝋣·𝋬
- Chinese
- 一千二百七十二
- Chinese (financial)
- 壹仟貳佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,272 = 0
- e — Euler's number (e)
- Digit 1,272 = 3
- φ — Golden ratio (φ)
- Digit 1,272 = 7
- √2 — Pythagoras's (√2)
- Digit 1,272 = 3
- ln 2 — Natural log of 2
- Digit 1,272 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,272 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1272, here are decompositions:
- 13 + 1259 = 1272
- 23 + 1249 = 1272
- 41 + 1231 = 1272
- 43 + 1229 = 1272
- 59 + 1213 = 1272
- 71 + 1201 = 1272
- 79 + 1193 = 1272
- 101 + 1171 = 1272
Showing the first eight; more decompositions exist.
UTF-8 encoding: D3 B8 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.248.
- Address
- 0.0.4.248
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.248
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1272 first appears in π at position 8,699 of the decimal expansion (the 8,699ordinal-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.