142,828
142,828 is a composite number, even.
142,828 (one hundred forty-two thousand eight hundred twenty-eight) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 7 × 5,101. Its proper divisors sum to 142,884, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22DEC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 1,024
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 828,241
- Recamán's sequence
- a(222,760) = 142,828
- Square (n²)
- 20,399,837,584
- Cube (n³)
- 2,913,668,002,447,552
- Divisor count
- 12
- σ(n) — sum of divisors
- 285,712
- φ(n) — Euler's totient
- 61,200
- Sum of prime factors
- 5,112
Primality
Prime factorization: 2 2 × 7 × 5101
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,828 = [377; (1, 12, 2, 188, 2, 12, 1, 754)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand eight hundred twenty-eight
- Ordinal
- 142828th
- Binary
- 100010110111101100
- Octal
- 426754
- Hexadecimal
- 0x22DEC
- Base64
- Ai3s
- One's complement
- 4,294,824,467 (32-bit)
- Scientific notation
- 1.42828 × 10⁵
- As a duration
- 142,828 s = 1 day, 15 hours, 40 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβωκηʹ
- Mayan (base 20)
- 𝋱·𝋱·𝋡·𝋨
- Chinese
- 一十四萬二千八百二十八
- Chinese (financial)
- 壹拾肆萬貳仟捌佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142828, here are decompositions:
- 17 + 142811 = 142828
- 29 + 142799 = 142828
- 41 + 142787 = 142828
- 71 + 142757 = 142828
- 131 + 142697 = 142828
- 227 + 142601 = 142828
- 239 + 142589 = 142828
- 269 + 142559 = 142828
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B7 AC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.236.
- Address
- 0.2.45.236
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.45.236
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 142,828 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 142828 first appears in π at position 60,179 of the decimal expansion (the 60,179ordinal-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.