145,724
145,724 is a composite number, even.
145,724 (one hundred forty-five thousand seven hundred twenty-four) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 17 × 2,143. Written other ways, in hexadecimal, 0x2393C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 1,120
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 427,541
- Recamán's sequence
- a(216,968) = 145,724
- Square (n²)
- 21,235,484,176
- Cube (n³)
- 3,094,519,696,063,424
- Divisor count
- 12
- σ(n) — sum of divisors
- 270,144
- φ(n) — Euler's totient
- 68,544
- Sum of prime factors
- 2,164
Primality
Prime factorization: 2 2 × 17 × 2143
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√145,724 = [381; (1, 2, 1, 4, 1, 1, 15, 1, 2, 3, 2, 1, 1, 1, 1, 10, 1, 1, 1, 1, 2, 3, 2, 1, …)]
Period length 32 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-five thousand seven hundred twenty-four
- Ordinal
- 145724th
- Binary
- 100011100100111100
- Octal
- 434474
- Hexadecimal
- 0x2393C
- Base64
- Ajk8
- One's complement
- 4,294,821,571 (32-bit)
- Scientific notation
- 1.45724 × 10⁵
- As a duration
- 145,724 s = 1 day, 16 hours, 28 minutes, 44 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμεψκδʹ
- Mayan (base 20)
- 𝋲·𝋤·𝋦·𝋤
- Chinese
- 一十四萬五千七百二十四
- Chinese (financial)
- 壹拾肆萬伍仟柒佰貳拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 145724, here are decompositions:
- 3 + 145721 = 145724
- 37 + 145687 = 145724
- 43 + 145681 = 145724
- 181 + 145543 = 145724
- 193 + 145531 = 145724
- 211 + 145513 = 145724
- 223 + 145501 = 145724
- 283 + 145441 = 145724
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 A4 BC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.57.60.
- Address
- 0.2.57.60
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.57.60
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 145,724 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.