128,401
128,401 is a composite number, odd.
128,401 (one hundred twenty-eight thousand four hundred one) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 7 × 13 × 17 × 83. Written other ways, in hexadecimal, 0x1F591.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 104,821
- Recamán's sequence
- a(232,838) = 128,401
- Square (n²)
- 16,486,816,801
- Cube (n³)
- 2,116,923,764,065,201
- Divisor count
- 16
- σ(n) — sum of divisors
- 169,344
- φ(n) — Euler's totient
- 94,464
- Sum of prime factors
- 120
Primality
Prime factorization: 7 × 13 × 17 × 83
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√128,401 = [358; (3, 44, 2, 5, 2, 10, 1, 2, 1, 5, 4, 2, 1, 1, 3, 1, 2, 13, 1, 2, 3, 1, 12, 3, …)]
Representations
- In words
- one hundred twenty-eight thousand four hundred one
- Ordinal
- 128401st
- Binary
- 11111010110010001
- Octal
- 372621
- Hexadecimal
- 0x1F591
- Base64
- AfWR
- One's complement
- 4,294,838,894 (32-bit)
- Scientific notation
- 1.28401 × 10⁵
- As a duration
- 128,401 s = 1 day, 11 hours, 40 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵ρκηυαʹ
- Mayan (base 20)
- 𝋰·𝋡·𝋠·𝋡
- Chinese
- 一十二萬八千四百零一
- Chinese (financial)
- 壹拾貳萬捌仟肆佰零壹
Also seen as
UTF-8 encoding: F0 9F 96 91 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.245.145.
- Address
- 0.1.245.145
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.245.145
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 128,401 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.