123513604 has 12 divisors (see below), whose sum is σ = 227525200. Its totient is φ = 58506408.

The previous prime is 123513589. The next prime is 123513613. The reversal of 123513604 is 406315321.

It is a super-2 number, since 2×123513604² = 30511220746137632, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 812514 + ... + 812665.

Almost surely, 2^123513604 is an apocalyptic number.

It is an amenable number.

123513604 is a deficient number, since it is larger than the sum of its proper divisors (104011596).

123513604 is a wasteful number, since it uses less digits than its factorization.

123513604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625202 (or 1625200 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 123513604 is about 11113.6674414884. The cubic root of 123513604 is about 498.0102308076.

Adding to 123513604 its reverse (406315321), we get a palindrome (529828925).

The spelling of 123513604 in words is "one hundred twenty-three million, five hundred thirteen thousand, six hundred four".