125,440
125,440 is a composite number, even.
125,440 (one hundred twenty-five thousand four hundred forty) is an even 6-digit number. It is a composite number with 60 divisors, and factors as 2⁹ × 5 × 7². Its proper divisors sum to 224,426, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1EA00.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 44,521
- Recamán's sequence
- a(235,284) = 125,440
- Square (n²)
- 15,735,193,600
- Cube (n³)
- 1,973,822,685,184,000
- Divisor count
- 60
- σ(n) — sum of divisors
- 349,866
- φ(n) — Euler's totient
- 43,008
- Sum of prime factors
- 37
Primality
Prime factorization: 2 9 × 5 × 7 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√125,440 = [354; (5, 1, 2, 2, 5, 1, 22, 177, 22, 1, 5, 2, 2, 1, 5, 708)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-five thousand four hundred forty
- Ordinal
- 125440th
- Binary
- 11110101000000000
- Octal
- 365000
- Hexadecimal
- 0x1EA00
- Base64
- AeoA
- One's complement
- 4,294,841,855 (32-bit)
- Scientific notation
- 1.2544 × 10⁵
- As a duration
- 125,440 s = 1 day, 10 hours, 50 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρκευμʹ
- Mayan (base 20)
- 𝋯·𝋭·𝋬·𝋠
- Chinese
- 一十二萬五千四百四十
- Chinese (financial)
- 壹拾貳萬伍仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 125440, here are decompositions:
- 11 + 125429 = 125440
- 17 + 125423 = 125440
- 41 + 125399 = 125440
- 53 + 125387 = 125440
- 101 + 125339 = 125440
- 137 + 125303 = 125440
- 179 + 125261 = 125440
- 197 + 125243 = 125440
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.234.0.
- Address
- 0.1.234.0
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.234.0
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 125,440 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 125440 first appears in π at position 64,136 of the decimal expansion (the 64,136ordinal-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.