125,642
125,642 is a composite number, even.
125,642 (one hundred twenty-five thousand six hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 11 × 5,711. Written other ways, in hexadecimal, 0x1EACA.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 480
- Digital root
- 2
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 246,521
- Recamán's sequence
- a(234,880) = 125,642
- Square (n²)
- 15,785,912,164
- Cube (n³)
- 1,983,373,576,109,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 205,632
- φ(n) — Euler's totient
- 57,100
- Sum of prime factors
- 5,724
Primality
Prime factorization: 2 × 11 × 5711
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√125,642 = [354; (2, 5, 1, 3, 2, 2, 1, 4, 4, 30, 1, 1, 2, 2, 3, 3, 1, 9, 4, 1, 1, 2, 4, 1, …)]
Representations
- In words
- one hundred twenty-five thousand six hundred forty-two
- Ordinal
- 125642nd
- Binary
- 11110101011001010
- Octal
- 365312
- Hexadecimal
- 0x1EACA
- Base64
- AerK
- One's complement
- 4,294,841,653 (32-bit)
- Scientific notation
- 1.25642 × 10⁵
- As a duration
- 125,642 s = 1 day, 10 hours, 54 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρκεχμβʹ
- Mayan (base 20)
- 𝋯·𝋮·𝋢·𝋢
- Chinese
- 一十二萬五千六百四十二
- Chinese (financial)
- 壹拾貳萬伍仟陸佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 125642, here are decompositions:
- 3 + 125639 = 125642
- 103 + 125539 = 125642
- 271 + 125371 = 125642
- 313 + 125329 = 125642
- 331 + 125311 = 125642
- 373 + 125269 = 125642
- 421 + 125221 = 125642
- 523 + 125119 = 125642
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.234.202.
- Address
- 0.1.234.202
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.234.202
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 125,642 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.