129,729
129,729 is a composite number, odd.
129,729 (one hundred twenty-nine thousand seven hundred twenty-nine) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 3 × 83 × 521. Written other ways, in hexadecimal, 0x1FAC1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 30
- Digit product
- 2,268
- Digital root
- 3
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 927,921
- Recamán's sequence
- a(497,045) = 129,729
- Square (n²)
- 16,829,613,441
- Cube (n³)
- 2,183,288,922,087,489
- Divisor count
- 8
- σ(n) — sum of divisors
- 175,392
- φ(n) — Euler's totient
- 85,280
- Sum of prime factors
- 607
Primality
Prime factorization: 3 × 83 × 521
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√129,729 = [360; (5, 1, 1, 2, 1, 1, 12, 17, 1, 13, 5, 1, 1, 3, 1, 22, 2, 5, 2, 1, 2, 1, 1, 1, …)]
Representations
- In words
- one hundred twenty-nine thousand seven hundred twenty-nine
- Ordinal
- 129729th
- Binary
- 11111101011000001
- Octal
- 375301
- Hexadecimal
- 0x1FAC1
- Base64
- AfrB
- One's complement
- 4,294,837,566 (32-bit)
- Scientific notation
- 1.29729 × 10⁵
- As a duration
- 129,729 s = 1 day, 12 hours, 2 minutes, 9 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκθψκθʹ
- Mayan (base 20)
- 𝋰·𝋤·𝋦·𝋩
- Chinese
- 一十二萬九千七百二十九
- Chinese (financial)
- 壹拾貳萬玖仟柒佰貳拾玖
Also seen as
UTF-8 encoding: F0 9F AB 81 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.250.193.
- Address
- 0.1.250.193
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.250.193
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 129,729 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°.