142,666
142,666 is a composite number, even.
142,666 (one hundred forty-two thousand six hundred sixty-six) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 71,333. Written other ways, in hexadecimal, 0x22D4A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 1,728
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 666,241
- Recamán's sequence
- a(223,084) = 142,666
- Square (n²)
- 20,353,587,556
- Cube (n³)
- 2,903,764,922,264,296
- Divisor count
- 4
- σ(n) — sum of divisors
- 214,002
- φ(n) — Euler's totient
- 71,332
- Sum of prime factors
- 71,335
Primality
Prime factorization: 2 × 71333
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,666 = [377; (1, 2, 2, 6, 1, 43, 1, 1, 3, 125, 1, 1, 1, 1, 1, 1, 1, 4, 3, 7, 10, 1, 1, 83, …)]
Representations
- In words
- one hundred forty-two thousand six hundred sixty-six
- Ordinal
- 142666th
- Binary
- 100010110101001010
- Octal
- 426512
- Hexadecimal
- 0x22D4A
- Base64
- Ai1K
- One's complement
- 4,294,824,629 (32-bit)
- Scientific notation
- 1.42666 × 10⁵
- As a duration
- 142,666 s = 1 day, 15 hours, 37 minutes, 46 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβχξϛʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋭·𝋦
- Chinese
- 一十四萬二千六百六十六
- Chinese (financial)
- 壹拾肆萬貳仟陸佰陸拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142666, here are decompositions:
- 47 + 142619 = 142666
- 59 + 142607 = 142666
- 107 + 142559 = 142666
- 113 + 142553 = 142666
- 137 + 142529 = 142666
- 197 + 142469 = 142666
- 233 + 142433 = 142666
- 239 + 142427 = 142666
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B5 8A (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.74.
- Address
- 0.2.45.74
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.74
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 142,666 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 142666 first appears in π at position 687,316 of the decimal expansion (the 687,316ordinal-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.