142,830
142,830 is a composite number, even.
142,830 (one hundred forty-two thousand eight hundred thirty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2 × 3³ × 5 × 23². Its proper divisors sum to 255,330, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22DEE.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 38,241
- Recamán's sequence
- a(222,756) = 142,830
- Square (n²)
- 20,400,408,900
- Cube (n³)
- 2,913,790,403,187,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 398,160
- φ(n) — Euler's totient
- 36,432
- Sum of prime factors
- 62
Primality
Prime factorization: 2 × 3 3 × 5 × 23 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,830 = [377; (1, 12, 1, 754)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand eight hundred thirty
- Ordinal
- 142830th
- Binary
- 100010110111101110
- Octal
- 426756
- Hexadecimal
- 0x22DEE
- Base64
- Ai3u
- One's complement
- 4,294,824,465 (32-bit)
- Scientific notation
- 1.4283 × 10⁵
- As a duration
- 142,830 s = 1 day, 15 hours, 40 minutes, 30 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμβωλʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋡·𝋪
- Chinese
- 一十四萬二千八百三十
- Chinese (financial)
- 壹拾肆萬貳仟捌佰參拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142830, here are decompositions:
- 19 + 142811 = 142830
- 31 + 142799 = 142830
- 41 + 142789 = 142830
- 43 + 142787 = 142830
- 59 + 142771 = 142830
- 71 + 142759 = 142830
- 73 + 142757 = 142830
- 97 + 142733 = 142830
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B7 AE (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.238.
- Address
- 0.2.45.238
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.238
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 142,830 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 142830 first appears in π at position 162,897 of the decimal expansion (the 162,897ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.