123613504 has 28 divisors (see below), whose sum is σ = 280338784. Its totient is φ = 52977024.

The previous prime is 123613471. The next prime is 123613507. The reversal of 123613504 is 405316321.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123613507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137514 + ... + 138409.

Almost surely, 2^123613504 is an apocalyptic number.

123613504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123613504 is an abundant number, since it is smaller than the sum of its proper divisors (156725280).

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

123613504 is an equidigital number, since it uses as much as digits as its factorization.

123613504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275942 (or 275932 counting only the distinct ones).

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

The square root of 123613504 is about 11118.1609990142. The cubic root of 123613504 is about 498.1444611359.

Adding to 123613504 its reverse (405316321), we get a palindrome (528929825).

The spelling of 123613504 in words is "one hundred twenty-three million, six hundred thirteen thousand, five hundred four".