123503504 has 80 divisors (see below), whose sum is σ = 265982976. Its totient is φ = 55296000.

The previous prime is 123503503. The next prime is 123503509. The reversal of 123503504 is 405305321.

It is a self number, because there is not a number n which added to its sum of digits gives 123503504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123503503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817829 + ... + 817979.

Almost surely, 2^123503504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123503504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132991488).

123503504 is an abundant number, since it is smaller than the sum of its proper divisors (142479472).

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

123503504 is a wasteful number, since it uses less digits than its factorization.

123503504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 123503504 is about 11113.2130367414. The cubic root of 123503504 is about 497.9966559455.

Adding to 123503504 its reverse (405305321), we get a palindrome (528808825).

The spelling of 123503504 in words is "one hundred twenty-three million, five hundred three thousand, five hundred four".