168,742
168,742 is a composite number, even.
168,742 (one hundred sixty-eight thousand seven hundred forty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 7 × 17 × 709. Written other ways, in hexadecimal, 0x29326.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 2,688
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 247,861
- Recamán's sequence
- a(55,352) = 168,742
- Square (n²)
- 28,473,862,564
- Cube (n³)
- 4,804,736,516,774,488
- Divisor count
- 16
- σ(n) — sum of divisors
- 306,720
- φ(n) — Euler's totient
- 67,968
- Sum of prime factors
- 735
Primality
Prime factorization: 2 × 7 × 17 × 709
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√168,742 = [410; (1, 3, 1, 1, 2, 4, 38, 1, 8, 2, 7, 1, 1, 90, 1, 3, 17, 4, 2, 1, 3, 1, 1, 1, …)]
Representations
- In words
- one hundred sixty-eight thousand seven hundred forty-two
- Ordinal
- 168742nd
- Binary
- 101001001100100110
- Octal
- 511446
- Hexadecimal
- 0x29326
- Base64
- ApMm
- One's complement
- 4,294,798,553 (32-bit)
- Scientific notation
- 1.68742 × 10⁵
- As a duration
- 168,742 s = 1 day, 22 hours, 52 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρξηψμβʹ
- Chinese
- 一十六萬八千七百四十二
- Chinese (financial)
- 壹拾陸萬捌仟柒佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 168742, here are decompositions:
- 5 + 168737 = 168742
- 11 + 168731 = 168742
- 23 + 168719 = 168742
- 29 + 168713 = 168742
- 113 + 168629 = 168742
- 251 + 168491 = 168742
- 293 + 168449 = 168742
- 389 + 168353 = 168742
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A9 8C A6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.147.38.
- Address
- 0.2.147.38
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.147.38
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 168,742 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 168742 first appears in π at position 751,344 of the decimal expansion (the 751,344ordinal-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°.