42,142
42,142 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 64
- Digital root
- 4
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 24,124
- Recamán's sequence
- a(151,339) = 42,142
- Square (n²)
- 1,775,948,164
- Cube (n³)
- 74,842,007,527,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 66,600
- φ(n) — Euler's totient
- 19,944
- Sum of prime factors
- 1,130
Primality
Prime factorization: 2 × 19 × 1109
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand one hundred forty-two
- Ordinal
- 42142nd
- Binary
- 1010010010011110
- Octal
- 122236
- Hexadecimal
- 0xA49E
- Base64
- pJ4=
- One's complement
- 23,393 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵μβρμβʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋧·𝋢
- Chinese
- 四萬二千一百四十二
- Chinese (financial)
- 肆萬貳仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,142 = 9
- e — Euler's number (e)
- Digit 42,142 = 8
- φ — Golden ratio (φ)
- Digit 42,142 = 0
- √2 — Pythagoras's (√2)
- Digit 42,142 = 5
- ln 2 — Natural log of 2
- Digit 42,142 = 8
- γ — Euler-Mascheroni (γ)
- Digit 42,142 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42142, here are decompositions:
- 3 + 42139 = 42142
- 11 + 42131 = 42142
- 41 + 42101 = 42142
- 53 + 42089 = 42142
- 59 + 42083 = 42142
- 71 + 42071 = 42142
- 173 + 41969 = 42142
- 239 + 41903 = 42142
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 92 9E (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.158.
- Address
- 0.0.164.158
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.158
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42142 first appears in π at position 28,050 of the decimal expansion (the 28,050ordinal-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.