139,040
139,040 is a composite number, even.
139,040 (one hundred thirty-nine thousand forty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 5 × 11 × 79. Its proper divisors sum to 223,840, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21F20.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 40,931
- Recamán's sequence
- a(490,747) = 139,040
- Square (n²)
- 19,332,121,600
- Cube (n³)
- 2,687,938,187,264,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 362,880
- φ(n) — Euler's totient
- 49,920
- Sum of prime factors
- 105
Primality
Prime factorization: 2 5 × 5 × 11 × 79
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,040 = [372; (1, 7, 2, 1, 1, 1, 2, 7, 1, 744)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand forty
- Ordinal
- 139040th
- Binary
- 100001111100100000
- Octal
- 417440
- Hexadecimal
- 0x21F20
- Base64
- Ah8g
- One's complement
- 4,294,828,255 (32-bit)
- Scientific notation
- 1.3904 × 10⁵
- As a duration
- 139,040 s = 1 day, 14 hours, 37 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλθμʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋬·𝋠
- Chinese
- 一十三萬九千零四十
- Chinese (financial)
- 壹拾參萬玖仟零肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139040, here are decompositions:
- 7 + 139033 = 139040
- 19 + 139021 = 139040
- 73 + 138967 = 139040
- 103 + 138937 = 139040
- 151 + 138889 = 139040
- 157 + 138883 = 139040
- 199 + 138841 = 139040
- 211 + 138829 = 139040
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BC A0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.32.
- Address
- 0.2.31.32
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.32
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 139,040 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 139040 first appears in π at position 311,897 of the decimal expansion (the 311,897ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.