72,042
72,042 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,027
- Recamán's sequence
- a(127,515) = 72,042
- Square (n²)
- 5,190,049,764
- Cube (n³)
- 373,901,565,098,088
- Divisor count
- 8
- σ(n) — sum of divisors
- 144,096
- φ(n) — Euler's totient
- 24,012
- Sum of prime factors
- 12,012
Primality
Prime factorization: 2 × 3 × 12007
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- seventy-two thousand forty-two
- Ordinal
- 72042nd
- Binary
- 10001100101101010
- Octal
- 214552
- Hexadecimal
- 0x1196A
- Base64
- ARlq
- One's complement
- 4,294,895,253 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋 · 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵οβμβʹ
- Mayan (base 20)
- 𝋩·𝋠·𝋢·𝋢
- Chinese
- 七萬二千零四十二
- Chinese (financial)
- 柒萬貳仟零肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 72,042 = 9
- e — Euler's number (e)
- Digit 72,042 = 4
- φ — Golden ratio (φ)
- Digit 72,042 = 9
- √2 — Pythagoras's (√2)
- Digit 72,042 = 5
- ln 2 — Natural log of 2
- Digit 72,042 = 6
- γ — Euler-Mascheroni (γ)
- Digit 72,042 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 72042, here are decompositions:
- 11 + 72031 = 72042
- 23 + 72019 = 72042
- 43 + 71999 = 72042
- 59 + 71983 = 72042
- 71 + 71971 = 72042
- 79 + 71963 = 72042
- 101 + 71941 = 72042
- 109 + 71933 = 72042
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.25.106.
- Address
- 0.1.25.106
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.25.106
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 72042 first appears in π at position 68,650 of the decimal expansion (the 68,650ordinal-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.