139,240
139,240 is a composite number, even.
139,240 (one hundred thirty-nine thousand two hundred forty) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2³ × 5 × 59². Its proper divisors sum to 179,450, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21FE8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 42,931
- Recamán's sequence
- a(490,347) = 139,240
- Square (n²)
- 19,387,777,600
- Cube (n³)
- 2,699,554,153,024,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 318,690
- φ(n) — Euler's totient
- 54,752
- Sum of prime factors
- 129
Primality
Prime factorization: 2 3 × 5 × 59 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,240 = [373; (6, 1, 2, 1, 1, 2, 18, 1, 2, 1, 23, 3, 18, 3, 23, 1, 2, 1, 18, 2, 1, 1, 2, 1, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand two hundred forty
- Ordinal
- 139240th
- Binary
- 100001111111101000
- Octal
- 417750
- Hexadecimal
- 0x21FE8
- Base64
- Ah/o
- One's complement
- 4,294,828,055 (32-bit)
- Scientific notation
- 1.3924 × 10⁵
- As a duration
- 139,240 s = 1 day, 14 hours, 40 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλθσμʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋢·𝋠
- Chinese
- 一十三萬九千二百四十
- Chinese (financial)
- 壹拾參萬玖仟貳佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139240, here are decompositions:
- 41 + 139199 = 139240
- 53 + 139187 = 139240
- 71 + 139169 = 139240
- 107 + 139133 = 139240
- 131 + 139109 = 139240
- 149 + 139091 = 139240
- 173 + 139067 = 139240
- 263 + 138977 = 139240
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BF A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.232.
- Address
- 0.2.31.232
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.232
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 139,240 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 139240 first appears in π at position 331,267 of the decimal expansion (the 331,267ordinal-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.