139,920
139,920 is a composite number, even.
139,920 (one hundred thirty-nine thousand nine hundred twenty) is an even 6-digit number. It is a composite number with 80 divisors, and factors as 2⁴ × 3 × 5 × 11 × 53. Its proper divisors sum to 342,192, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22290.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 29,931
- Recamán's sequence
- a(488,987) = 139,920
- Square (n²)
- 19,577,606,400
- Cube (n³)
- 2,739,298,687,488,000
- Divisor count
- 80
- σ(n) — sum of divisors
- 482,112
- φ(n) — Euler's totient
- 33,280
- Sum of prime factors
- 80
Primality
Prime factorization: 2 4 × 3 × 5 × 11 × 53
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,920 = [374; (17, 748)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand nine hundred twenty
- Ordinal
- 139920th
- Binary
- 100010001010010000
- Octal
- 421220
- Hexadecimal
- 0x22290
- Base64
- AiKQ
- One's complement
- 4,294,827,375 (32-bit)
- Scientific notation
- 1.3992 × 10⁵
- As a duration
- 139,920 s = 1 day, 14 hours, 52 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρλθϡκʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋰·𝋠
- Chinese
- 一十三萬九千九百二十
- Chinese (financial)
- 壹拾參萬玖仟玖佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139920, here are decompositions:
- 13 + 139907 = 139920
- 19 + 139901 = 139920
- 29 + 139891 = 139920
- 37 + 139883 = 139920
- 59 + 139861 = 139920
- 83 + 139837 = 139920
- 89 + 139831 = 139920
- 107 + 139813 = 139920
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 8A 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.34.144.
- Address
- 0.2.34.144
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.34.144
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 139,920 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 139920 first appears in π at position 648,800 of the decimal expansion (the 648,800ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.