42,742
42,742 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 448
- Digital root
- 1
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 24,724
- Recamán's sequence
- a(73,108) = 42,742
- Square (n²)
- 1,826,878,564
- Cube (n³)
- 78,084,443,582,488
- Divisor count
- 16
- σ(n) — sum of divisors
- 76,032
- φ(n) — Euler's totient
- 17,640
- Sum of prime factors
- 123
Primality
Prime factorization: 2 × 7 × 43 × 71
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand seven hundred forty-two
- Ordinal
- 42742nd
- Binary
- 1010011011110110
- Octal
- 123366
- Hexadecimal
- 0xA6F6
- Base64
- pvY=
- One's complement
- 22,793 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵μβψμβʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋱·𝋢
- Chinese
- 四萬二千七百四十二
- Chinese (financial)
- 肆萬貳仟柒佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,742 = 5
- e — Euler's number (e)
- Digit 42,742 = 3
- φ — Golden ratio (φ)
- Digit 42,742 = 0
- √2 — Pythagoras's (√2)
- Digit 42,742 = 8
- ln 2 — Natural log of 2
- Digit 42,742 = 8
- γ — Euler-Mascheroni (γ)
- Digit 42,742 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42742, here are decompositions:
- 5 + 42737 = 42742
- 23 + 42719 = 42742
- 41 + 42701 = 42742
- 53 + 42689 = 42742
- 59 + 42683 = 42742
- 101 + 42641 = 42742
- 131 + 42611 = 42742
- 173 + 42569 = 42742
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9B B6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.246.
- Address
- 0.0.166.246
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.246
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42742 first appears in π at position 50,065 of the decimal expansion (the 50,065ordinal-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.