126,421
126,421 is a prime, odd.
126,421 (one hundred twenty-six thousand four hundred twenty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x1EDD5.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 96
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 124,621
- Square (n²)
- 15,982,269,241
- Cube (n³)
- 2,020,494,459,716,461
- Divisor count
- 2
- σ(n) — sum of divisors
- 126,422
- φ(n) — Euler's totient
- 126,420
Primality
126,421 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√126,421 = [355; (1, 1, 3, 1, 6, 3, 1, 4, 12, 1, 2, 1, 1, 3, 1, 1, 3, 1, 1, 2, 1, 12, 4, 1, …)]
Period length 31 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-six thousand four hundred twenty-one
- Ordinal
- 126421st
- Binary
- 11110110111010101
- Octal
- 366725
- Hexadecimal
- 0x1EDD5
- Base64
- Ae3V
- One's complement
- 4,294,840,874 (32-bit)
- Scientific notation
- 1.26421 × 10⁵
- As a duration
- 126,421 s = 1 day, 11 hours, 7 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρκϛυκαʹ
- Mayan (base 20)
- 𝋯·𝋰·𝋡·𝋡
- Chinese
- 一十二萬六千四百二十一
- Chinese (financial)
- 壹拾貳萬陸仟肆佰貳拾壹
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.1.237.213.
- Address
- 0.1.237.213
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.237.213
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 126,421 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.