139,172
139,172 is a composite number, even.
139,172 (one hundred thirty-nine thousand one hundred seventy-two) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 11 × 3,163. Written other ways, in hexadecimal, 0x21FA4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 378
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 271,931
- Recamán's sequence
- a(490,483) = 139,172
- Square (n²)
- 19,368,845,584
- Cube (n³)
- 2,695,600,977,616,448
- Divisor count
- 12
- σ(n) — sum of divisors
- 265,776
- φ(n) — Euler's totient
- 63,240
- Sum of prime factors
- 3,178
Primality
Prime factorization: 2 2 × 11 × 3163
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,172 = [373; (17, 2, 1, 5, 1, 13, 4, 2, 1, 1, 8, 2, 1, 1, 22, 1, 2, 1, 1, 2, 1, 2, 5, 2, …)]
Representations
- In words
- one hundred thirty-nine thousand one hundred seventy-two
- Ordinal
- 139172nd
- Binary
- 100001111110100100
- Octal
- 417644
- Hexadecimal
- 0x21FA4
- Base64
- Ah+k
- One's complement
- 4,294,828,123 (32-bit)
- Scientific notation
- 1.39172 × 10⁵
- As a duration
- 139,172 s = 1 day, 14 hours, 39 minutes, 32 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλθροβʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋲·𝋬
- Chinese
- 一十三萬九千一百七十二
- Chinese (financial)
- 壹拾參萬玖仟壹佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139172, here are decompositions:
- 3 + 139169 = 139172
- 139 + 139033 = 139172
- 151 + 139021 = 139172
- 283 + 138889 = 139172
- 331 + 138841 = 139172
- 373 + 138799 = 139172
- 379 + 138793 = 139172
- 409 + 138763 = 139172
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BE A4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.164.
- Address
- 0.2.31.164
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.164
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 139,172 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 139172 first appears in π at position 797,083 of the decimal expansion (the 797,083ordinal-suffix:rd 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.