128,427
128,427 is a composite number, odd.
128,427 (one hundred twenty-eight thousand four hundred twenty-seven) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 3 × 13 × 37 × 89. Written other ways, in hexadecimal, 0x1F5AB.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 896
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 724,821
- Recamán's sequence
- a(232,786) = 128,427
- Square (n²)
- 16,493,494,329
- Cube (n³)
- 2,118,209,996,190,483
- Divisor count
- 16
- σ(n) — sum of divisors
- 191,520
- φ(n) — Euler's totient
- 76,032
- Sum of prime factors
- 142
Primality
Prime factorization: 3 × 13 × 37 × 89
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√128,427 = [358; (2, 1, 2, 1, 1, 1, 1, 1, 3, 4, 3, 2, 5, 1, 5, 1, 5, 1, 5, 2, 3, 4, 3, 1, …)]
Period length 32 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-eight thousand four hundred twenty-seven
- Ordinal
- 128427th
- Binary
- 11111010110101011
- Octal
- 372653
- Hexadecimal
- 0x1F5AB
- Base64
- AfWr
- One's complement
- 4,294,838,868 (32-bit)
- Scientific notation
- 1.28427 × 10⁵
- As a duration
- 128,427 s = 1 day, 11 hours, 40 minutes, 27 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκηυκζʹ
- Mayan (base 20)
- 𝋰·𝋡·𝋡·𝋧
- Chinese
- 一十二萬八千四百二十七
- Chinese (financial)
- 壹拾貳萬捌仟肆佰貳拾柒
Also seen as
UTF-8 encoding: F0 9F 96 AB (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.245.171.
- Address
- 0.1.245.171
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.245.171
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 128,427 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°.