125,990
125,990 is a composite number, even.
125,990 (one hundred twenty-five thousand nine hundred ninety) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 43 × 293. Written other ways, in hexadecimal, 0x1EC26.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 99,521
- Recamán's sequence
- a(234,184) = 125,990
- Square (n²)
- 15,873,480,100
- Cube (n³)
- 1,999,899,757,799,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 232,848
- φ(n) — Euler's totient
- 49,056
- Sum of prime factors
- 343
Primality
Prime factorization: 2 × 5 × 43 × 293
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√125,990 = [354; (1, 19, 3, 1, 1, 13, 1, 11, 9, 1, 10, 1, 2, 1, 4, 50, 2, 70, 2, 50, 4, 1, 2, 1, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-five thousand nine hundred ninety
- Ordinal
- 125990th
- Binary
- 11110110000100110
- Octal
- 366046
- Hexadecimal
- 0x1EC26
- Base64
- Aewm
- One's complement
- 4,294,841,305 (32-bit)
- Scientific notation
- 1.2599 × 10⁵
- As a duration
- 125,990 s = 1 day, 10 hours, 59 minutes, 50 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρκεϡϟʹ
- Mayan (base 20)
- 𝋯·𝋮·𝋳·𝋪
- Chinese
- 一十二萬五千九百九十
- Chinese (financial)
- 壹拾貳萬伍仟玖佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 125990, here are decompositions:
- 31 + 125959 = 125990
- 61 + 125929 = 125990
- 103 + 125887 = 125990
- 127 + 125863 = 125990
- 199 + 125791 = 125990
- 283 + 125707 = 125990
- 307 + 125683 = 125990
- 331 + 125659 = 125990
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.236.38.
- Address
- 0.1.236.38
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.236.38
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 125,990 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.