145,421
145,421 is a composite number, odd.
145,421 (one hundred forty-five thousand four hundred twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 31 × 4,691. Written other ways, in hexadecimal, 0x2380D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 160
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 124,541
- Recamán's sequence
- a(217,574) = 145,421
- Square (n²)
- 21,147,267,241
- Cube (n³)
- 3,075,256,749,453,461
- Divisor count
- 4
- σ(n) — sum of divisors
- 150,144
- φ(n) — Euler's totient
- 140,700
- Sum of prime factors
- 4,722
Primality
Prime factorization: 31 × 4691
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√145,421 = [381; (2, 1, 13, 1, 2, 1, 1, 1, 1, 1, 1, 37, 1, 1, 14, 6, 4, 3, 1, 2, 2, 7, 4, 1, …)]
Representations
- In words
- one hundred forty-five thousand four hundred twenty-one
- Ordinal
- 145421st
- Binary
- 100011100000001101
- Octal
- 434015
- Hexadecimal
- 0x2380D
- Base64
- AjgN
- One's complement
- 4,294,821,874 (32-bit)
- Scientific notation
- 1.45421 × 10⁵
- As a duration
- 145,421 s = 1 day, 16 hours, 23 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρμευκαʹ
- Mayan (base 20)
- 𝋲·𝋣·𝋫·𝋡
- Chinese
- 一十四萬五千四百二十一
- Chinese (financial)
- 壹拾肆萬伍仟肆佰貳拾壹
Also seen as
UTF-8 encoding: F0 A3 A0 8D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.56.13.
- Address
- 0.2.56.13
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.56.13
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 145,421 and was likely granted around 1873.
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.