142,990
142,990 is a composite number, even.
142,990 (one hundred forty-two thousand nine hundred ninety) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 79 × 181. Written other ways, in hexadecimal, 0x22E8E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 99,241
- Recamán's sequence
- a(222,436) = 142,990
- Square (n²)
- 20,446,140,100
- Cube (n³)
- 2,923,593,572,899,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 262,080
- φ(n) — Euler's totient
- 56,160
- Sum of prime factors
- 267
Primality
Prime factorization: 2 × 5 × 79 × 181
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,990 = [378; (7, 7, 2, 68, 3, 1, 1, 83, 2, 5, 1, 3, 19, 7, 1, 1, 2, 2, 1, 2, 1, 8, 1, 1, …)]
Representations
- In words
- one hundred forty-two thousand nine hundred ninety
- Ordinal
- 142990th
- Binary
- 100010111010001110
- Octal
- 427216
- Hexadecimal
- 0x22E8E
- Base64
- Ai6O
- One's complement
- 4,294,824,305 (32-bit)
- Scientific notation
- 1.4299 × 10⁵
- As a duration
- 142,990 s = 1 day, 15 hours, 43 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμβϡϟʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋩·𝋪
- Chinese
- 一十四萬二千九百九十
- Chinese (financial)
- 壹拾肆萬貳仟玖佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142990, here are decompositions:
- 11 + 142979 = 142990
- 17 + 142973 = 142990
- 41 + 142949 = 142990
- 83 + 142907 = 142990
- 149 + 142841 = 142990
- 179 + 142811 = 142990
- 191 + 142799 = 142990
- 233 + 142757 = 142990
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 BA 8E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.142.
- Address
- 0.2.46.142
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.142
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 142,990 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 142990 first appears in π at position 485,484 of the decimal expansion (the 485,484ordinal-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.