12,742
12,742 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 112
- Digital root
- 7
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 24,721
- Recamán's sequence
- a(48,791) = 12,742
- Square (n²)
- 162,358,564
- Cube (n³)
- 2,068,772,822,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 20,016
- φ(n) — Euler's totient
- 6,072
- Sum of prime factors
- 302
Primality
Prime factorization: 2 × 23 × 277
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twelve thousand seven hundred forty-two
- Ordinal
- 12742nd
- Binary
- 11000111000110
- Octal
- 30706
- Hexadecimal
- 0x31C6
- Base64
- McY=
- One's complement
- 52,793 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ιβψμβʹ
- Mayan (base 20)
- 𝋡·𝋫·𝋱·𝋢
- Chinese
- 一萬二千七百四十二
- Chinese (financial)
- 壹萬貳仟柒佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,742 = 2
- e — Euler's number (e)
- Digit 12,742 = 7
- φ — Golden ratio (φ)
- Digit 12,742 = 5
- √2 — Pythagoras's (√2)
- Digit 12,742 = 6
- ln 2 — Natural log of 2
- Digit 12,742 = 9
- γ — Euler-Mascheroni (γ)
- Digit 12,742 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 12742, here are decompositions:
- 3 + 12739 = 12742
- 29 + 12713 = 12742
- 53 + 12689 = 12742
- 71 + 12671 = 12742
- 83 + 12659 = 12742
- 89 + 12653 = 12742
- 101 + 12641 = 12742
- 131 + 12611 = 12742
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 87 86 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.49.198.
- Address
- 0.0.49.198
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.49.198
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 12742 first appears in π at position 65,959 of the decimal expansion (the 65,959ordinal-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.