168,042
168,042 is a composite number, even.
168,042 (one hundred sixty-eight thousand forty-two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 7 × 4,001. Its proper divisors sum to 216,150, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2906A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 240,861
- Square (n²)
- 28,238,113,764
- Cube (n³)
- 4,745,189,113,130,088
- Divisor count
- 16
- σ(n) — sum of divisors
- 384,192
- φ(n) — Euler's totient
- 48,000
- Sum of prime factors
- 4,013
Primality
Prime factorization: 2 × 3 × 7 × 4001
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√168,042 = [409; (1, 13, 7, 3, 5, 1, 1, 1, 1, 1, 6, 10, 4, 2, 2, 6, 21, 2, 2, 1, 1, 2, 5, 1, …)]
Representations
- In words
- one hundred sixty-eight thousand forty-two
- Ordinal
- 168042nd
- Binary
- 101001000001101010
- Octal
- 510152
- Hexadecimal
- 0x2906A
- Base64
- ApBq
- One's complement
- 4,294,799,253 (32-bit)
- Scientific notation
- 1.68042 × 10⁵
- As a duration
- 168,042 s = 1 day, 22 hours, 40 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρξημβʹ
- Chinese
- 一十六萬八千零四十二
- Chinese (financial)
- 壹拾陸萬捌仟零肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 168042, here are decompositions:
- 5 + 168037 = 168042
- 13 + 168029 = 168042
- 19 + 168023 = 168042
- 29 + 168013 = 168042
- 71 + 167971 = 168042
- 89 + 167953 = 168042
- 131 + 167911 = 168042
- 151 + 167891 = 168042
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A9 81 AA (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.144.106.
- Address
- 0.2.144.106
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.144.106
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 168,042 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 168042 first appears in π at position 380,513 of the decimal expansion (the 380,513ordinal-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°.