72,442
72,442 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 448
- Digital root
- 1
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 24,427
- Recamán's sequence
- a(126,715) = 72,442
- Square (n²)
- 5,247,843,364
- Cube (n³)
- 380,164,268,974,888
- Divisor count
- 8
- σ(n) — sum of divisors
- 112,500
- φ(n) — Euler's totient
- 34,944
- Sum of prime factors
- 1,280
Primality
Prime factorization: 2 × 29 × 1249
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- seventy-two thousand four hundred forty-two
- Ordinal
- 72442nd
- Binary
- 10001101011111010
- Octal
- 215372
- Hexadecimal
- 0x11AFA
- Base64
- ARr6
- One's complement
- 4,294,894,853 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵οβυμβʹ
- Mayan (base 20)
- 𝋩·𝋡·𝋢·𝋢
- Chinese
- 七萬二千四百四十二
- Chinese (financial)
- 柒萬貳仟肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 72,442 = 1
- e — Euler's number (e)
- Digit 72,442 = 0
- φ — Golden ratio (φ)
- Digit 72,442 = 5
- √2 — Pythagoras's (√2)
- Digit 72,442 = 8
- ln 2 — Natural log of 2
- Digit 72,442 = 7
- γ — Euler-Mascheroni (γ)
- Digit 72,442 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 72442, here are decompositions:
- 11 + 72431 = 72442
- 59 + 72383 = 72442
- 89 + 72353 = 72442
- 101 + 72341 = 72442
- 173 + 72269 = 72442
- 191 + 72251 = 72442
- 269 + 72173 = 72442
- 281 + 72161 = 72442
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.26.250.
- Address
- 0.1.26.250
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.26.250
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 72442 first appears in π at position 139,998 of the decimal expansion (the 139,998ordinal-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.