Base | Representation |
---|---|
bin | 101110010001… |
… | …011101001101 |
3 | 211211021101220 |
4 | 232101131031 |
5 | 11101131000 |
6 | 1111553553 |
7 | 205050540 |
oct | 56213515 |
9 | 24737356 |
10 | 12130125 |
11 | 69355a7 |
12 | 408b8b9 |
13 | 26892b7 |
14 | 187a857 |
15 | 10e91a0 |
hex | b9174d |
12130125 has 32 divisors (see below), whose sum is σ = 23073024. Its totient is φ = 5544000.
The previous prime is 12130109. The next prime is 12130159. The reversal of 12130125 is 52103121.
It is not a de Polignac number, because 12130125 - 24 = 12130109 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315 + ... + 4935.
It is an arithmetic number, because the mean of its divisors is an integer number (721032).
Almost surely, 212130125 is an apocalyptic number.
12130125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12130125 is a deficient number, since it is larger than the sum of its proper divisors (10942899).
12130125 is an equidigital number, since it uses as much as digits as its factorization.
12130125 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4646 (or 4636 counting only the distinct ones).
The product of its (nonzero) digits is 60, while the sum is 15.
The square root of 12130125 is about 3482.8328986617. The cubic root of 12130125 is about 229.7674082188.
Adding to 12130125 its reverse (52103121), we get a palindrome (64233246).
The spelling of 12130125 in words is "twelve million, one hundred thirty thousand, one hundred twenty-five".
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