123123021204 has 24 divisors (see below), whose sum is σ = 287336566048. Its totient is φ = 41033933280.

The previous prime is 123123021173. The next prime is 123123021293. The reversal of 123123021204 is 402120321321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811462 + ... + 951165.

Almost surely, 2^123123021204 is an apocalyptic number.

It is an amenable number.

123123021204 is an abundant number, since it is smaller than the sum of its proper divisors (164213544844).

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

123123021204 is a wasteful number, since it uses less digits than its factorization.

123123021204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768455 (or 1768453 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 123123021204 its reverse (402120321321), we get a palindrome (525243342525).

The spelling of 123123021204 in words is "one hundred twenty-three billion, one hundred twenty-three million, twenty-one thousand, two hundred four".