139,442
139,442 is a composite number, even.
139,442 (one hundred thirty-nine thousand four hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 113 × 617. Written other ways, in hexadecimal, 0x220B2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 864
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 244,931
- Recamán's sequence
- a(489,943) = 139,442
- Square (n²)
- 19,444,071,364
- Cube (n³)
- 2,711,320,199,138,888
- Divisor count
- 8
- σ(n) — sum of divisors
- 211,356
- φ(n) — Euler's totient
- 68,992
- Sum of prime factors
- 732
Primality
Prime factorization: 2 × 113 × 617
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,442 = [373; (2, 2, 1, 1, 2, 52, 1, 23, 9, 15, 7, 1, 1, 1, 2, 1, 1, 1, 7, 15, 9, 23, 1, 52, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand four hundred forty-two
- Ordinal
- 139442nd
- Binary
- 100010000010110010
- Octal
- 420262
- Hexadecimal
- 0x220B2
- Base64
- AiCy
- One's complement
- 4,294,827,853 (32-bit)
- Scientific notation
- 1.39442 × 10⁵
- As a duration
- 139,442 s = 1 day, 14 hours, 44 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλθυμβʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋬·𝋢
- Chinese
- 一十三萬九千四百四十二
- Chinese (financial)
- 壹拾參萬玖仟肆佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139442, here are decompositions:
- 3 + 139439 = 139442
- 13 + 139429 = 139442
- 19 + 139423 = 139442
- 73 + 139369 = 139442
- 103 + 139339 = 139442
- 109 + 139333 = 139442
- 139 + 139303 = 139442
- 151 + 139291 = 139442
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 82 B2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.32.178.
- Address
- 0.2.32.178
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.32.178
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 139,442 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 139442 first appears in π at position 419,412 of the decimal expansion (the 419,412ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.