125,520
125,520 is a composite number, even.
125,520 (one hundred twenty-five thousand five hundred twenty) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 3 × 5 × 523. Its proper divisors sum to 264,336, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1EA50.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 25,521
- Recamán's sequence
- a(235,124) = 125,520
- Square (n²)
- 15,755,270,400
- Cube (n³)
- 1,977,601,540,608,000
- Divisor count
- 40
- σ(n) — sum of divisors
- 389,856
- φ(n) — Euler's totient
- 33,408
- Sum of prime factors
- 539
Primality
Prime factorization: 2 4 × 3 × 5 × 523
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√125,520 = [354; (3, 2, 8, 2, 3, 708)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-five thousand five hundred twenty
- Ordinal
- 125520th
- Binary
- 11110101001010000
- Octal
- 365120
- Hexadecimal
- 0x1EA50
- Base64
- AepQ
- One's complement
- 4,294,841,775 (32-bit)
- Scientific notation
- 1.2552 × 10⁵
- As a duration
- 125,520 s = 1 day, 10 hours, 52 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρκεφκʹ
- Mayan (base 20)
- 𝋯·𝋭·𝋰·𝋠
- Chinese
- 一十二萬五千五百二十
- Chinese (financial)
- 壹拾貳萬伍仟伍佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 125520, here are decompositions:
- 11 + 125509 = 125520
- 13 + 125507 = 125520
- 23 + 125497 = 125520
- 67 + 125453 = 125520
- 79 + 125441 = 125520
- 97 + 125423 = 125520
- 113 + 125407 = 125520
- 137 + 125383 = 125520
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.234.80.
- Address
- 0.1.234.80
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.234.80
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 125,520 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 125520 first appears in π at position 509,400 of the decimal expansion (the 509,400ordinal-suffix:th 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.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.