139,942
139,942 is a composite number, even.
139,942 (one hundred thirty-nine thousand nine hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 11 × 6,361. Written other ways, in hexadecimal, 0x222A6.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 1,944
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 249,931
- Recamán's sequence
- a(488,943) = 139,942
- Square (n²)
- 19,583,763,364
- Cube (n³)
- 2,740,591,012,684,888
- Divisor count
- 8
- σ(n) — sum of divisors
- 229,032
- φ(n) — Euler's totient
- 63,600
- Sum of prime factors
- 6,374
Primality
Prime factorization: 2 × 11 × 6361
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,942 = [374; (11, 2, 1, 82, 2, 4, 1, 26, 1, 8, 3, 1, 2, 249, 34, 249, 2, 1, 3, 8, 1, 26, 1, 4, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand nine hundred forty-two
- Ordinal
- 139942nd
- Binary
- 100010001010100110
- Octal
- 421246
- Hexadecimal
- 0x222A6
- Base64
- AiKm
- One's complement
- 4,294,827,353 (32-bit)
- Scientific notation
- 1.39942 × 10⁵
- As a duration
- 139,942 s = 1 day, 14 hours, 52 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλθϡμβʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋱·𝋢
- Chinese
- 一十三萬九千九百四十二
- Chinese (financial)
- 壹拾參萬玖仟玖佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139942, here are decompositions:
- 3 + 139939 = 139942
- 41 + 139901 = 139942
- 59 + 139883 = 139942
- 71 + 139871 = 139942
- 233 + 139709 = 139942
- 239 + 139703 = 139942
- 281 + 139661 = 139942
- 353 + 139589 = 139942
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 8A A6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.34.166.
- Address
- 0.2.34.166
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.34.166
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 139,942 and was likely granted around 1872.
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.