139,720
139,720 is a composite number, even.
139,720 (one hundred thirty-nine thousand seven hundred twenty) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2³ × 5 × 7 × 499. Its proper divisors sum to 220,280, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x221C8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 27,931
- Recamán's sequence
- a(489,387) = 139,720
- Square (n²)
- 19,521,678,400
- Cube (n³)
- 2,727,568,906,048,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 360,000
- φ(n) — Euler's totient
- 47,808
- Sum of prime factors
- 517
Primality
Prime factorization: 2 3 × 5 × 7 × 499
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,720 = [373; (1, 3, 1, 3, 1, 5, 2, 1, 1, 2, 2, 2, 4, 6, 1, 8, 2, 1, 2, 1, 1, 3, 1, 5, …)]
Representations
- In words
- one hundred thirty-nine thousand seven hundred twenty
- Ordinal
- 139720th
- Binary
- 100010000111001000
- Octal
- 420710
- Hexadecimal
- 0x221C8
- Base64
- AiHI
- One's complement
- 4,294,827,575 (32-bit)
- Scientific notation
- 1.3972 × 10⁵
- As a duration
- 139,720 s = 1 day, 14 hours, 48 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρλθψκʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋦·𝋠
- Chinese
- 一十三萬九千七百二十
- Chinese (financial)
- 壹拾參萬玖仟柒佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139720, here are decompositions:
- 11 + 139709 = 139720
- 17 + 139703 = 139720
- 23 + 139697 = 139720
- 59 + 139661 = 139720
- 101 + 139619 = 139720
- 131 + 139589 = 139720
- 149 + 139571 = 139720
- 173 + 139547 = 139720
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 87 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.200.
- Address
- 0.2.33.200
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.200
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 139,720 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 139720 first appears in π at position 432,736 of the decimal expansion (the 432,736ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.