155,842
155,842 is a composite number, even.
155,842 (one hundred fifty-five thousand eight hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 67 × 1,163. Written other ways, in hexadecimal, 0x260C2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 1,600
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 248,551
- Recamán's sequence
- a(206,180) = 155,842
- Square (n²)
- 24,286,728,964
- Cube (n³)
- 3,784,892,415,207,688
- Divisor count
- 8
- σ(n) — sum of divisors
- 237,456
- φ(n) — Euler's totient
- 76,692
- Sum of prime factors
- 1,232
Primality
Prime factorization: 2 × 67 × 1163
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√155,842 = [394; (1, 3, 3, 5, 1, 23, 11, 1, 11, 1, 1, 1, 1, 2, 394, 2, 1, 1, 1, 1, 11, 1, 11, 23, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred fifty-five thousand eight hundred forty-two
- Ordinal
- 155842nd
- Binary
- 100110000011000010
- Octal
- 460302
- Hexadecimal
- 0x260C2
- Base64
- AmDC
- One's complement
- 4,294,811,453 (32-bit)
- Scientific notation
- 1.55842 × 10⁵
- As a duration
- 155,842 s = 1 day, 19 hours, 17 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρνεωμβʹ
- Mayan (base 20)
- 𝋳·𝋩·𝋬·𝋢
- Chinese
- 一十五萬五千八百四十二
- Chinese (financial)
- 壹拾伍萬伍仟捌佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 155842, here are decompositions:
- 41 + 155801 = 155842
- 59 + 155783 = 155842
- 101 + 155741 = 155842
- 149 + 155693 = 155842
- 179 + 155663 = 155842
- 233 + 155609 = 155842
- 263 + 155579 = 155842
- 389 + 155453 = 155842
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A6 83 82 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.96.194.
- Address
- 0.2.96.194
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.96.194
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 155,842 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.