145,424
145,424 is a composite number, even.
145,424 (one hundred forty-five thousand four hundred twenty-four) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 61 × 149. Written other ways, in hexadecimal, 0x23810.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 640
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 424,541
- Recamán's sequence
- a(217,568) = 145,424
- Square (n²)
- 21,148,139,776
- Cube (n³)
- 3,075,447,078,785,024
- Divisor count
- 20
- σ(n) — sum of divisors
- 288,300
- φ(n) — Euler's totient
- 71,040
- Sum of prime factors
- 218
Primality
Prime factorization: 2 4 × 61 × 149
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√145,424 = [381; (2, 1, 8, 1, 6, 1, 1, 29, 1, 37, 5, 1, 46, 1, 5, 37, 1, 29, 1, 1, 6, 1, 8, 1, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-five thousand four hundred twenty-four
- Ordinal
- 145424th
- Binary
- 100011100000010000
- Octal
- 434020
- Hexadecimal
- 0x23810
- Base64
- AjgQ
- One's complement
- 4,294,821,871 (32-bit)
- Scientific notation
- 1.45424 × 10⁵
- As a duration
- 145,424 s = 1 day, 16 hours, 23 minutes, 44 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμευκδʹ
- Mayan (base 20)
- 𝋲·𝋣·𝋫·𝋤
- Chinese
- 一十四萬五千四百二十四
- Chinese (financial)
- 壹拾肆萬伍仟肆佰貳拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 145424, here are decompositions:
- 7 + 145417 = 145424
- 43 + 145381 = 145424
- 157 + 145267 = 145424
- 211 + 145213 = 145424
- 457 + 144967 = 145424
- 463 + 144961 = 145424
- 541 + 144883 = 145424
- 577 + 144847 = 145424
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 A0 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.56.16.
- Address
- 0.2.56.16
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.56.16
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 145,424 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.