125,820
125,820 is a composite number, even.
125,820 (one hundred twenty-five thousand eight hundred twenty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2² × 3³ × 5 × 233. Its proper divisors sum to 267,300, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1EB7C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 28,521
- Recamán's sequence
- a(234,524) = 125,820
- Square (n²)
- 15,830,672,400
- Cube (n³)
- 1,991,815,201,368,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 393,120
- φ(n) — Euler's totient
- 33,408
- Sum of prime factors
- 251
Primality
Prime factorization: 2 2 × 3 3 × 5 × 233
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√125,820 = [354; (1, 2, 2, 6, 12, 1, 1, 19, 5, 2, 1, 2, 1, 13, 1, 2, 1, 78, 12, 1, 1, 1, 9, 2, …)]
Period length 52 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-five thousand eight hundred twenty
- Ordinal
- 125820th
- Binary
- 11110101101111100
- Octal
- 365574
- Hexadecimal
- 0x1EB7C
- Base64
- Aet8
- One's complement
- 4,294,841,475 (32-bit)
- Scientific notation
- 1.2582 × 10⁵
- As a duration
- 125,820 s = 1 day, 10 hours, 57 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρκεωκʹ
- Mayan (base 20)
- 𝋯·𝋮·𝋫·𝋠
- Chinese
- 一十二萬五千八百二十
- Chinese (financial)
- 壹拾貳萬伍仟捌佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 125820, here are decompositions:
- 7 + 125813 = 125820
- 17 + 125803 = 125820
- 29 + 125791 = 125820
- 31 + 125789 = 125820
- 43 + 125777 = 125820
- 67 + 125753 = 125820
- 83 + 125737 = 125820
- 89 + 125731 = 125820
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.235.124.
- Address
- 0.1.235.124
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.235.124
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 125,820 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 125820 first appears in π at position 973,347 of the decimal expansion (the 973,347ordinal-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°.