139,742
139,742 is a composite number, even.
139,742 (one hundred thirty-nine thousand seven hundred forty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 107 × 653. Written other ways, in hexadecimal, 0x221DE.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 1,512
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 247,931
- Recamán's sequence
- a(489,343) = 139,742
- Square (n²)
- 19,527,826,564
- Cube (n³)
- 2,728,857,539,706,488
- Divisor count
- 8
- σ(n) — sum of divisors
- 211,896
- φ(n) — Euler's totient
- 69,112
- Sum of prime factors
- 762
Primality
Prime factorization: 2 × 107 × 653
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,742 = [373; (1, 4, 1, 1, 2, 1, 1, 2, 9, 3, 9, 1, 3, 1, 1, 2, 1, 7, 1, 38, 2, 6, 2, 38, …)]
Period length 44 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand seven hundred forty-two
- Ordinal
- 139742nd
- Binary
- 100010000111011110
- Octal
- 420736
- Hexadecimal
- 0x221DE
- Base64
- AiHe
- One's complement
- 4,294,827,553 (32-bit)
- Scientific notation
- 1.39742 × 10⁵
- As a duration
- 139,742 s = 1 day, 14 hours, 49 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλθψμβʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋧·𝋢
- Chinese
- 一十三萬九千七百四十二
- Chinese (financial)
- 壹拾參萬玖仟柒佰肆拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139742, here are decompositions:
- 3 + 139739 = 139742
- 13 + 139729 = 139742
- 61 + 139681 = 139742
- 79 + 139663 = 139742
- 151 + 139591 = 139742
- 241 + 139501 = 139742
- 283 + 139459 = 139742
- 313 + 139429 = 139742
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 87 9E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.222.
- Address
- 0.2.33.222
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.222
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 139,742 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.