142,987
142,987 is a composite number, odd.
142,987 (one hundred forty-two thousand nine hundred eighty-seven) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 13 × 17 × 647. Written other ways, in hexadecimal, 0x22E8B.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 31
- Digit product
- 4,032
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 789,241
- Recamán's sequence
- a(222,442) = 142,987
- Square (n²)
- 20,445,282,169
- Cube (n³)
- 2,923,409,561,498,803
- Divisor count
- 8
- σ(n) — sum of divisors
- 163,296
- φ(n) — Euler's totient
- 124,032
- Sum of prime factors
- 677
Primality
Prime factorization: 13 × 17 × 647
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,987 = [378; (7, 2, 1, 13, 1, 1, 2, 2, 1, 3, 1, 5, 1, 2, 11, 9, 4, 44, 4, 9, 11, 2, 1, 5, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand nine hundred eighty-seven
- Ordinal
- 142987th
- Binary
- 100010111010001011
- Octal
- 427213
- Hexadecimal
- 0x22E8B
- Base64
- Ai6L
- One's complement
- 4,294,824,308 (32-bit)
- Scientific notation
- 1.42987 × 10⁵
- As a duration
- 142,987 s = 1 day, 15 hours, 43 minutes, 7 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβϡπζʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋩·𝋧
- Chinese
- 一十四萬二千九百八十七
- Chinese (financial)
- 壹拾肆萬貳仟玖佰捌拾柒
Also seen as
UTF-8 encoding: F0 A2 BA 8B (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.46.139.
- Address
- 0.2.46.139
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.46.139
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 142,987 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 142987 first appears in π at position 201,888 of the decimal expansion (the 201,888ordinal-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.