Base | Representation |
---|---|
bin | 1111011111111… |
… | …11111011010101 |
3 | 100001122212012022 |
4 | 13233333323111 |
5 | 231241220000 |
6 | 20522502525 |
7 | 3136115111 |
oct | 757777325 |
9 | 301585168 |
10 | 130023125 |
11 | 67438331 |
12 | 37664a45 |
13 | 20c2617b |
14 | 133a8741 |
15 | b635585 |
hex | 7bffed5 |
130023125 has 10 divisors (see below), whose sum is σ = 162477678. Its totient is φ = 104018000.
The previous prime is 130023121. The next prime is 130023139. The reversal of 130023125 is 521320031.
It can be written as a sum of positive squares in 5 ways, for example, as 98763844 + 31259281 = 9938^2 + 5591^2 .
It is not a de Polignac number, because 130023125 - 22 = 130023121 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130023121) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 103394 + ... + 104643.
Almost surely, 2130023125 is an apocalyptic number.
It is an amenable number.
130023125 is a deficient number, since it is larger than the sum of its proper divisors (32454553).
130023125 is an frugal number, since it uses more digits than its factorization.
130023125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 208057 (or 208042 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 17.
The square root of 130023125 is about 11402.7683042321. The cubic root of 130023125 is about 506.6097377077.
Adding to 130023125 its reverse (521320031), we get a palindrome (651343156).
The spelling of 130023125 in words is "one hundred thirty million, twenty-three thousand, one hundred twenty-five".
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