139,420
139,420 is a composite number, even.
139,420 (one hundred thirty-nine thousand four hundred twenty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,971. Its proper divisors sum to 153,404, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2209C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 24,931
- Recamán's sequence
- a(489,987) = 139,420
- Square (n²)
- 19,437,936,400
- Cube (n³)
- 2,710,037,092,888,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 292,824
- φ(n) — Euler's totient
- 55,760
- Sum of prime factors
- 6,980
Primality
Prime factorization: 2 2 × 5 × 6971
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,420 = [373; (2, 1, 1, 3, 2, 1, 5, 1, 1, 8, 2, 1, 6, 20, 1, 1, 2, 6, 2, 4, 1, 4, 1, 34, …)]
Representations
- In words
- one hundred thirty-nine thousand four hundred twenty
- Ordinal
- 139420th
- Binary
- 100010000010011100
- Octal
- 420234
- Hexadecimal
- 0x2209C
- Base64
- AiCc
- One's complement
- 4,294,827,875 (32-bit)
- Scientific notation
- 1.3942 × 10⁵
- As a duration
- 139,420 s = 1 day, 14 hours, 43 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρλθυκʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋫·𝋠
- Chinese
- 一十三萬九千四百二十
- Chinese (financial)
- 壹拾參萬玖仟肆佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139420, here are decompositions:
- 11 + 139409 = 139420
- 23 + 139397 = 139420
- 53 + 139367 = 139420
- 59 + 139361 = 139420
- 107 + 139313 = 139420
- 179 + 139241 = 139420
- 233 + 139187 = 139420
- 251 + 139169 = 139420
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 82 9C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.32.156.
- Address
- 0.2.32.156
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.32.156
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 139,420 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 139420 first appears in π at position 232,669 of the decimal expansion (the 232,669ordinal-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.