12130520 has 32 divisors (see below), whose sum is σ = 28900800. Its totient is φ = 4566528.

The previous prime is 12130507. The next prime is 12130523. The reversal of 12130520 is 2503121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12130495 and 12130504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8240 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (903150).

Almost surely, 2^12130520 is an apocalyptic number.

12130520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12130520 is an abundant number, since it is smaller than the sum of its proper divisors (16770280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12130520 is a wasteful number, since it uses less digits than its factorization.

12130520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17867 (or 17863 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12130520 is about 3482.8896049114. The cubic root of 12130520 is about 229.7699022063.

Adding to 12130520 its reverse (2503121), we get a palindrome (14633641).

The spelling of 12130520 in words is "twelve million, one hundred thirty thousand, five hundred twenty".