139,200
139,200 is a composite number, even.
139,200 (one hundred thirty-nine thousand two hundred) is an even 6-digit number. It is a composite number with 84 divisors, and factors as 2⁶ × 3 × 5² × 29. Its proper divisors sum to 333,240, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21FC0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 2,931
- Recamán's sequence
- a(490,427) = 139,200
- Square (n²)
- 19,376,640,000
- Cube (n³)
- 2,697,228,288,000,000
- Divisor count
- 84
- σ(n) — sum of divisors
- 472,440
- φ(n) — Euler's totient
- 35,840
- Sum of prime factors
- 54
Primality
Prime factorization: 2 6 × 3 × 5 2 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,200 = [373; (10, 1, 1, 29, 3, 11, 3, 29, 1, 1, 10, 746)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand two hundred
- Ordinal
- 139200th
- Binary
- 100001111111000000
- Octal
- 417700
- Hexadecimal
- 0x21FC0
- Base64
- Ah/A
- One's complement
- 4,294,828,095 (32-bit)
- Scientific notation
- 1.392 × 10⁵
- As a duration
- 139,200 s = 1 day, 14 hours, 40 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢
- Greek (Milesian)
- ͵ρλθσʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋠·𝋠
- Chinese
- 一十三萬九千二百
- Chinese (financial)
- 壹拾參萬玖仟貳佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139200, here are decompositions:
- 13 + 139187 = 139200
- 23 + 139177 = 139200
- 31 + 139169 = 139200
- 67 + 139133 = 139200
- 79 + 139121 = 139200
- 109 + 139091 = 139200
- 167 + 139033 = 139200
- 179 + 139021 = 139200
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BF 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.192.
- Address
- 0.2.31.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.192
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 139,200 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 139200 first appears in π at position 753,131 of the decimal expansion (the 753,131ordinal-suffix:st 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°.