142,428
142,428 is a composite number, even.
142,428 (one hundred forty-two thousand four hundred twenty-eight) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2² × 3 × 11 × 13 × 83. Its proper divisors sum to 252,708, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22C5C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 512
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 824,241
- Recamán's sequence
- a(40,168) = 142,428
- Square (n²)
- 20,285,735,184
- Cube (n³)
- 2,889,256,690,786,752
- Divisor count
- 48
- σ(n) — sum of divisors
- 395,136
- φ(n) — Euler's totient
- 39,360
- Sum of prime factors
- 114
Primality
Prime factorization: 2 2 × 3 × 11 × 13 × 83
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√142,428 = [377; (2, 1, 1, 10, 2, 1, 18, 1, 2, 10, 1, 1, 2, 754)]
Period length 14 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-two thousand four hundred twenty-eight
- Ordinal
- 142428th
- Binary
- 100010110001011100
- Octal
- 426134
- Hexadecimal
- 0x22C5C
- Base64
- Aixc
- One's complement
- 4,294,824,867 (32-bit)
- Scientific notation
- 1.42428 × 10⁵
- As a duration
- 142,428 s = 1 day, 15 hours, 33 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμβυκηʹ
- Mayan (base 20)
- 𝋱·𝋰·𝋡·𝋨
- Chinese
- 一十四萬二千四百二十八
- Chinese (financial)
- 壹拾肆萬貳仟肆佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142428, here are decompositions:
- 7 + 142421 = 142428
- 37 + 142391 = 142428
- 47 + 142381 = 142428
- 59 + 142369 = 142428
- 71 + 142357 = 142428
- 101 + 142327 = 142428
- 109 + 142319 = 142428
- 131 + 142297 = 142428
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 B1 9C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.44.92.
- Address
- 0.2.44.92
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.44.92
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 142,428 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 142428 first appears in π at position 201,585 of the decimal expansion (the 201,585ordinal-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°.