139,740
139,740 is a composite number, even.
139,740 (one hundred thirty-nine thousand seven hundred forty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2² × 3 × 5 × 17 × 137. Its proper divisors sum to 277,572, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x221DC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 47,931
- Recamán's sequence
- a(489,347) = 139,740
- Square (n²)
- 19,527,267,600
- Cube (n³)
- 2,728,740,374,424,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 417,312
- φ(n) — Euler's totient
- 34,816
- Sum of prime factors
- 166
Primality
Prime factorization: 2 2 × 3 × 5 × 17 × 137
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,740 = [373; (1, 4, 2, 186, 2, 4, 1, 746)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand seven hundred forty
- Ordinal
- 139740th
- Binary
- 100010000111011100
- Octal
- 420734
- Hexadecimal
- 0x221DC
- Base64
- AiHc
- One's complement
- 4,294,827,555 (32-bit)
- Scientific notation
- 1.3974 × 10⁵
- As a duration
- 139,740 s = 1 day, 14 hours, 49 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλθψμʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋧·𝋠
- Chinese
- 一十三萬九千七百四十
- Chinese (financial)
- 壹拾參萬玖仟柒佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139740, here are decompositions:
- 11 + 139729 = 139740
- 19 + 139721 = 139740
- 31 + 139709 = 139740
- 37 + 139703 = 139740
- 43 + 139697 = 139740
- 59 + 139681 = 139740
- 79 + 139661 = 139740
- 113 + 139627 = 139740
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 87 9C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.220.
- Address
- 0.2.33.220
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.220
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 139,740 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 139740 first appears in π at position 513,061 of the decimal expansion (the 513,061ordinal-suffix:st 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°.