123120521423004 has 72 divisors (see below), whose sum is σ = 346510941264768. Its totient is φ = 33325855414560.

The previous prime is 123120521422963. The next prime is 123120521423017. The reversal of 123120521423004 is 400324125021321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2030053462 + ... + 2030114109.

Almost surely, 2^{123120521423004} is an apocalyptic number.

123120521423004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123120521423004 is an abundant number, since it is smaller than the sum of its proper divisors (223390419841764).

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

123120521423004 is a wasteful number, since it uses less digits than its factorization.

123120521423004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060167623 (or 4060167602 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 123120521423004 its reverse (400324125021321), we get a palindrome (523444646444325).

The spelling of 123120521423004 in words is "one hundred twenty-three trillion, one hundred twenty billion, five hundred twenty-one million, four hundred twenty-three thousand, four".