126,642
126,642 is a composite number, even.
126,642 (one hundred twenty-six thousand six hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 3 × 21,107. Its proper divisors sum to 126,654, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1EEB2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 576
- Digital root
- 3
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 246,621
- Square (n²)
- 16,038,196,164
- Cube (n³)
- 2,031,109,238,601,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 253,296
- φ(n) — Euler's totient
- 42,212
- Sum of prime factors
- 21,112
Primality
Prime factorization: 2 × 3 × 21107
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√126,642 = [355; (1, 6, 1, 1, 2, 1, 11, 1, 3, 2, 1, 14, 1, 3, 1, 1, 5, 1, 2, 1, 7, 3, 1, 8, …)]
Representations
- In words
- one hundred twenty-six thousand six hundred forty-two
- Ordinal
- 126642nd
- Binary
- 11110111010110010
- Octal
- 367262
- Hexadecimal
- 0x1EEB2
- Base64
- Ae6y
- One's complement
- 4,294,840,653 (32-bit)
- Scientific notation
- 1.26642 × 10⁵
- As a duration
- 126,642 s = 1 day, 11 hours, 10 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκϛχμβʹ
- Mayan (base 20)
- 𝋯·𝋰·𝋬·𝋢
- Chinese
- 一十二萬六千六百四十二
- Chinese (financial)
- 壹拾貳萬陸仟陸佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 126642, here are decompositions:
- 11 + 126631 = 126642
- 29 + 126613 = 126642
- 31 + 126611 = 126642
- 41 + 126601 = 126642
- 59 + 126583 = 126642
- 101 + 126541 = 126642
- 149 + 126493 = 126642
- 151 + 126491 = 126642
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9E BA B2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.238.178.
- Address
- 0.1.238.178
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.238.178
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 126,642 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.