164,642
164,642 is a composite number, even.
164,642 (one hundred sixty-four thousand six hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 191 × 431. Written other ways, in hexadecimal, 0x28322.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 1,152
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 246,461
- Recamán's sequence
- a(472,731) = 164,642
- Square (n²)
- 27,106,988,164
- Cube (n³)
- 4,462,948,745,297,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 248,832
- φ(n) — Euler's totient
- 81,700
- Sum of prime factors
- 624
Primality
Prime factorization: 2 × 191 × 431
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√164,642 = [405; (1, 3, 5, 2, 2, 1, 4, 1, 5, 1, 1, 3, 2, 1, 10, 2, 2, 1, 2, 7, 1, 404, 1, 7, …)]
Period length 44 — the block in parentheses repeats forever.
Representations
- In words
- one hundred sixty-four thousand six hundred forty-two
- Ordinal
- 164642nd
- Binary
- 101000001100100010
- Octal
- 501442
- Hexadecimal
- 0x28322
- Base64
- AoMi
- One's complement
- 4,294,802,653 (32-bit)
- Scientific notation
- 1.64642 × 10⁵
- As a duration
- 164,642 s = 1 day, 21 hours, 44 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρξδχμβʹ
- Chinese
- 一十六萬四千六百四十二
- Chinese (financial)
- 壹拾陸萬肆仟陸佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 164642, here are decompositions:
- 19 + 164623 = 164642
- 43 + 164599 = 164642
- 61 + 164581 = 164642
- 73 + 164569 = 164642
- 139 + 164503 = 164642
- 193 + 164449 = 164642
- 199 + 164443 = 164642
- 211 + 164431 = 164642
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A8 8C A2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.131.34.
- Address
- 0.2.131.34
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.131.34
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 164,642 and was likely granted around 1874.
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°.