128,429
128,429 is a composite number, odd.
128,429 (one hundred twenty-eight thousand four hundred twenty-nine) is an odd 6-digit number. It is a composite number with 6 divisors, and factors as 7² × 2,621. Written other ways, in hexadecimal, 0x1F5AD.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 1,152
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 924,821
- Recamán's sequence
- a(232,782) = 128,429
- Square (n²)
- 16,494,008,041
- Cube (n³)
- 2,118,308,958,697,589
- Divisor count
- 6
- σ(n) — sum of divisors
- 149,454
- φ(n) — Euler's totient
- 110,040
- Sum of prime factors
- 2,635
Primality
Prime factorization: 7 2 × 2621
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√128,429 = [358; (2, 1, 2, 2, 1, 2, 2, 1, 7, 1, 13, 1, 2, 1, 7, 3, 3, 1, 35, 14, 1, 1, 2, 64, …)]
Representations
- In words
- one hundred twenty-eight thousand four hundred twenty-nine
- Ordinal
- 128429th
- Binary
- 11111010110101101
- Octal
- 372655
- Hexadecimal
- 0x1F5AD
- Base64
- AfWt
- One's complement
- 4,294,838,866 (32-bit)
- Scientific notation
- 1.28429 × 10⁵
- As a duration
- 128,429 s = 1 day, 11 hours, 40 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκηυκθʹ
- Mayan (base 20)
- 𝋰·𝋡·𝋡·𝋩
- Chinese
- 一十二萬八千四百二十九
- Chinese (financial)
- 壹拾貳萬捌仟肆佰貳拾玖
Also seen as
UTF-8 encoding: F0 9F 96 AD (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.245.173.
- Address
- 0.1.245.173
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.245.173
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 128,429 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.