142,200
142,200 is a composite number, even.
142,200 (one hundred forty-two thousand two hundred) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2³ × 3² × 5² × 79. Its proper divisors sum to 341,400, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22B78.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 9
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 2,241
- Recamán's sequence
- a(39,712) = 142,200
- Square (n²)
- 20,220,840,000
- Cube (n³)
- 2,875,403,448,000,000
- Divisor count
- 72
- σ(n) — sum of divisors
- 483,600
- φ(n) — Euler's totient
- 37,440
- Sum of prime factors
- 101
Primality
Prime factorization: 2 3 × 3 2 × 5 2 × 79
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,200 = [377; (10, 1, 1, 1, 1, 1, 3, 3, 13, 6, 6, 2, 1, 29, 2, 14, 1, 8, 1, 82, 1, 8, 1, 14, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand two hundred
- Ordinal
- 142200th
- Binary
- 100010101101111000
- Octal
- 425570
- Hexadecimal
- 0x22B78
- Base64
- Ait4
- One's complement
- 4,294,825,095 (32-bit)
- Scientific notation
- 1.422 × 10⁵
- As a duration
- 142,200 s = 1 day, 15 hours, 30 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢
- Greek (Milesian)
- ͵ρμβσʹ
- Mayan (base 20)
- 𝋱·𝋯·𝋪·𝋠
- Chinese
- 一十四萬二千二百
- Chinese (financial)
- 壹拾肆萬貳仟貳佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142200, here are decompositions:
- 7 + 142193 = 142200
- 11 + 142189 = 142200
- 17 + 142183 = 142200
- 31 + 142169 = 142200
- 41 + 142159 = 142200
- 43 + 142157 = 142200
- 89 + 142111 = 142200
- 101 + 142099 = 142200
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 AD B8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.43.120.
- Address
- 0.2.43.120
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.43.120
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 142,200 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 142200 first appears in π at position 238,020 of the decimal expansion (the 238,020ordinal-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°.