42,990
42,990 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 9,924
- Recamán's sequence
- a(72,612) = 42,990
- Square (n²)
- 1,848,140,100
- Cube (n³)
- 79,451,542,899,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 103,248
- φ(n) — Euler's totient
- 11,456
- Sum of prime factors
- 1,443
Primality
Prime factorization: 2 × 3 × 5 × 1433
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand nine hundred ninety
- Ordinal
- 42990th
- Binary
- 1010011111101110
- Octal
- 123756
- Hexadecimal
- 0xA7EE
- Base64
- p+4=
- One's complement
- 22,545 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβϡϟʹ
- Mayan (base 20)
- 𝋥·𝋧·𝋩·𝋪
- Chinese
- 四萬二千九百九十
- Chinese (financial)
- 肆萬貳仟玖佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,990 = 8
- e — Euler's number (e)
- Digit 42,990 = 5
- φ — Golden ratio (φ)
- Digit 42,990 = 0
- √2 — Pythagoras's (√2)
- Digit 42,990 = 7
- ln 2 — Natural log of 2
- Digit 42,990 = 7
- γ — Euler-Mascheroni (γ)
- Digit 42,990 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42990, here are decompositions:
- 11 + 42979 = 42990
- 23 + 42967 = 42990
- 29 + 42961 = 42990
- 37 + 42953 = 42990
- 47 + 42943 = 42990
- 53 + 42937 = 42990
- 61 + 42929 = 42990
- 67 + 42923 = 42990
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.167.238.
- Address
- 0.0.167.238
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.167.238
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 42990 first appears in π at position 104,975 of the decimal expansion (the 104,975ordinal-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.