42,842
42,842 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 20
- Digit product
- 512
- Digital root
- 2
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 24,824
- Recamán's sequence
- a(72,908) = 42,842
- Square (n²)
- 1,835,436,964
- Cube (n³)
- 78,633,790,411,688
- Divisor count
- 8
- σ(n) — sum of divisors
- 66,432
- φ(n) — Euler's totient
- 20,700
- Sum of prime factors
- 724
Primality
Prime factorization: 2 × 31 × 691
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand eight hundred forty-two
- Ordinal
- 42842nd
- Binary
- 1010011101011010
- Octal
- 123532
- Hexadecimal
- 0xA75A
- Base64
- p1o=
- One's complement
- 22,693 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵μβωμβʹ
- Mayan (base 20)
- 𝋥·𝋧·𝋢·𝋢
- Chinese
- 四萬二千八百四十二
- Chinese (financial)
- 肆萬貳仟捌佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,842 = 2
- e — Euler's number (e)
- Digit 42,842 = 5
- φ — Golden ratio (φ)
- Digit 42,842 = 9
- √2 — Pythagoras's (√2)
- Digit 42,842 = 0
- ln 2 — Natural log of 2
- Digit 42,842 = 6
- γ — Euler-Mascheroni (γ)
- Digit 42,842 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42842, here are decompositions:
- 3 + 42839 = 42842
- 13 + 42829 = 42842
- 139 + 42703 = 42842
- 193 + 42649 = 42842
- 199 + 42643 = 42842
- 271 + 42571 = 42842
- 379 + 42463 = 42842
- 409 + 42433 = 42842
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9D 9A (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.167.90.
- Address
- 0.0.167.90
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.167.90
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42842 first appears in π at position 568,901 of the decimal expansion (the 568,901ordinal-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.