139,072
139,072 is a composite number, even.
139,072 (one hundred thirty-nine thousand seventy-two) is an even 6-digit number. It is a composite number with 28 divisors, and factors as 2⁶ × 41 × 53. Its proper divisors sum to 148,964, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21F40.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 270,931
- Recamán's sequence
- a(490,683) = 139,072
- Square (n²)
- 19,341,021,184
- Cube (n³)
- 2,689,794,498,101,248
- Divisor count
- 28
- σ(n) — sum of divisors
- 288,036
- φ(n) — Euler's totient
- 66,560
- Sum of prime factors
- 106
Primality
Prime factorization: 2 6 × 41 × 53
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,072 = [372; (1, 12, 11, 1, 1, 2, 1, 2, 1, 185, 1, 2, 1, 2, 1, 1, 11, 12, 1, 744)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand seventy-two
- Ordinal
- 139072nd
- Binary
- 100001111101000000
- Octal
- 417500
- Hexadecimal
- 0x21F40
- Base64
- Ah9A
- One's complement
- 4,294,828,223 (32-bit)
- Scientific notation
- 1.39072 × 10⁵
- As a duration
- 139,072 s = 1 day, 14 hours, 37 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλθοβʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋭·𝋬
- Chinese
- 一十三萬九千零七十二
- Chinese (financial)
- 壹拾參萬玖仟零柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139072, here are decompositions:
- 5 + 139067 = 139072
- 113 + 138959 = 139072
- 149 + 138923 = 139072
- 173 + 138899 = 139072
- 179 + 138893 = 139072
- 251 + 138821 = 139072
- 389 + 138683 = 139072
- 431 + 138641 = 139072
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BD 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.64.
- Address
- 0.2.31.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.64
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 139,072 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 139072 first appears in π at position 101,574 of the decimal expansion (the 101,574ordinal-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.