2,742
2,742 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digit product
- 112
- Digital root
- 6
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 2,472
- Recamán's sequence
- a(2,771) = 2,742
- Square (n²)
- 7,518,564
- Cube (n³)
- 20,615,902,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 5,496
- φ(n) — Euler's totient
- 912
- Sum of prime factors
- 462
Primality
Prime factorization: 2 × 3 × 457
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand seven hundred forty-two
- Ordinal
- 2742nd
- Roman numeral
- MMDCCXLII
- Binary
- 101010110110
- Octal
- 5266
- Hexadecimal
- 0xAB6
- Base64
- CrY=
- One's complement
- 62,793 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵βψμβʹ
- Mayan (base 20)
- 𝋦·𝋱·𝋢
- Chinese
- 二千七百四十二
- Chinese (financial)
- 貳仟柒佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,742 = 1
- e — Euler's number (e)
- Digit 2,742 = 2
- φ — Golden ratio (φ)
- Digit 2,742 = 9
- √2 — Pythagoras's (√2)
- Digit 2,742 = 7
- ln 2 — Natural log of 2
- Digit 2,742 = 5
- γ — Euler-Mascheroni (γ)
- Digit 2,742 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2742, here are decompositions:
- 11 + 2731 = 2742
- 13 + 2729 = 2742
- 23 + 2719 = 2742
- 29 + 2713 = 2742
- 31 + 2711 = 2742
- 43 + 2699 = 2742
- 53 + 2689 = 2742
- 59 + 2683 = 2742
Showing the first eight; more decompositions exist.
UTF-8 encoding: E0 AA B6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.10.182.
- Address
- 0.0.10.182
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.10.182
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 2742 first appears in π at position 5,951 of the decimal expansion (the 5,951ordinal-suffix:st 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.