42,172
42,172 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 112
- Digital root
- 7
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 27,124
- Recamán's sequence
- a(151,279) = 42,172
- Square (n²)
- 1,778,477,584
- Cube (n³)
- 75,001,956,672,448
- Divisor count
- 12
- σ(n) — sum of divisors
- 79,576
- φ(n) — Euler's totient
- 19,440
- Sum of prime factors
- 828
Primality
Prime factorization: 2 2 × 13 × 811
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand one hundred seventy-two
- Ordinal
- 42172nd
- Binary
- 1010010010111100
- Octal
- 122274
- Hexadecimal
- 0xA4BC
- Base64
- pLw=
- One's complement
- 23,363 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵μβροβʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋨·𝋬
- Chinese
- 四萬二千一百七十二
- Chinese (financial)
- 肆萬貳仟壹佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,172 = 5
- e — Euler's number (e)
- Digit 42,172 = 7
- φ — Golden ratio (φ)
- Digit 42,172 = 0
- √2 — Pythagoras's (√2)
- Digit 42,172 = 6
- ln 2 — Natural log of 2
- Digit 42,172 = 5
- γ — Euler-Mascheroni (γ)
- Digit 42,172 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42172, here are decompositions:
- 3 + 42169 = 42172
- 41 + 42131 = 42172
- 71 + 42101 = 42172
- 83 + 42089 = 42172
- 89 + 42083 = 42172
- 101 + 42071 = 42172
- 149 + 42023 = 42172
- 173 + 41999 = 42172
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 92 BC (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.188.
- Address
- 0.0.164.188
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.188
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42172 first appears in π at position 43,016 of the decimal expansion (the 43,016ordinal-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.