165,142
165,142 is a composite number, even.
165,142 (one hundred sixty-five thousand one hundred forty-two) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 82,571. Written other ways, in hexadecimal, 0x28516.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 240
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 241,561
- Square (n²)
- 27,271,880,164
- Cube (n³)
- 4,503,732,834,043,288
- Divisor count
- 4
- σ(n) — sum of divisors
- 247,716
- φ(n) — Euler's totient
- 82,570
- Sum of prime factors
- 82,573
Primality
Prime factorization: 2 × 82571
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√165,142 = [406; (2, 1, 1, 1, 8, 1, 2, 1, 1, 7, 45, 47, 1, 3, 1, 2, 4, 11, 1, 9, 8, 1, 1, 1, …)]
Representations
- In words
- one hundred sixty-five thousand one hundred forty-two
- Ordinal
- 165142nd
- Binary
- 101000010100010110
- Octal
- 502426
- Hexadecimal
- 0x28516
- Base64
- AoUW
- One's complement
- 4,294,802,153 (32-bit)
- Scientific notation
- 1.65142 × 10⁵
- As a duration
- 165,142 s = 1 day, 21 hours, 52 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρξερμβʹ
- Chinese
- 一十六萬五千一百四十二
- Chinese (financial)
- 壹拾陸萬伍仟壹佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 165142, here are decompositions:
- 53 + 165089 = 165142
- 59 + 165083 = 165142
- 83 + 165059 = 165142
- 101 + 165041 = 165142
- 179 + 164963 = 165142
- 311 + 164831 = 165142
- 353 + 164789 = 165142
- 479 + 164663 = 165142
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A8 94 96 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.133.22.
- Address
- 0.2.133.22
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.133.22
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 165,142 and was likely granted around 1874.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 165142 first appears in π at position 56,198 of the decimal expansion (the 56,198ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.