21,429
21,429 is a composite number, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 144
- Digital root
- 9
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 92,412
- Recamán's sequence
- a(40,981) = 21,429
- Square (n²)
- 459,202,041
- Cube (n³)
- 9,840,240,536,589
- Divisor count
- 6
- σ(n) — sum of divisors
- 30,966
- φ(n) — Euler's totient
- 14,280
- Sum of prime factors
- 2,387
Primality
Prime factorization: 3 2 × 2381
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twenty-one thousand four hundred twenty-nine
- Ordinal
- 21429th
- Binary
- 101001110110101
- Octal
- 51665
- Hexadecimal
- 0x53B5
- Base64
- U7U=
- One's complement
- 44,106 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵καυκθʹ
- Mayan (base 20)
- 𝋢·𝋭·𝋫·𝋩
- Chinese
- 二萬一千四百二十九
- Chinese (financial)
- 貳萬壹仟肆佰貳拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 21,429 = 0
- e — Euler's number (e)
- Digit 21,429 = 4
- φ — Golden ratio (φ)
- Digit 21,429 = 3
- √2 — Pythagoras's (√2)
- Digit 21,429 = 0
- ln 2 — Natural log of 2
- Digit 21,429 = 7
- γ — Euler-Mascheroni (γ)
- Digit 21,429 = 5
Also seen as
UTF-8 encoding: E5 8E B5 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.83.181.
- Address
- 0.0.83.181
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.83.181
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 21429 first appears in π at position 14,061 of the decimal expansion (the 14,061ordinal-suffix:st 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.