139,572
139,572 is a composite number, even.
139,572 (one hundred thirty-nine thousand five hundred seventy-two) is an even 6-digit number. It is a composite number with 18 divisors, and factors as 2² × 3² × 3,877. Its proper divisors sum to 213,326, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22134.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 1,890
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 275,931
- Recamán's sequence
- a(489,683) = 139,572
- Square (n²)
- 19,480,343,184
- Cube (n³)
- 2,718,910,458,877,248
- Divisor count
- 18
- σ(n) — sum of divisors
- 352,898
- φ(n) — Euler's totient
- 46,512
- Sum of prime factors
- 3,887
Primality
Prime factorization: 2 2 × 3 2 × 3877
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,572 = [373; (1, 1, 2, 5, 1, 1, 1, 2, 20, 2, 1, 1, 1, 5, 2, 1, 1, 746)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand five hundred seventy-two
- Ordinal
- 139572nd
- Binary
- 100010000100110100
- Octal
- 420464
- Hexadecimal
- 0x22134
- Base64
- AiE0
- One's complement
- 4,294,827,723 (32-bit)
- Scientific notation
- 1.39572 × 10⁵
- As a duration
- 139,572 s = 1 day, 14 hours, 46 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλθφοβʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋲·𝋬
- Chinese
- 一十三萬九千五百七十二
- Chinese (financial)
- 壹拾參萬玖仟伍佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139572, here are decompositions:
- 61 + 139511 = 139572
- 71 + 139501 = 139572
- 79 + 139493 = 139572
- 89 + 139483 = 139572
- 113 + 139459 = 139572
- 149 + 139423 = 139572
- 163 + 139409 = 139572
- 179 + 139393 = 139572
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 84 B4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.52.
- Address
- 0.2.33.52
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.52
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 139,572 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 139572 first appears in π at position 268,377 of the decimal expansion (the 268,377ordinal-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°.