123320420432 has 40 divisors (see below), whose sum is σ = 267699256032. Its totient is φ = 54539740800.

The previous prime is 123320420429. The next prime is 123320420441. The reversal of 123320420432 is 234024023321.

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, 9462194 + ... + 9475217.

Almost surely, 2^123320420432 is an apocalyptic number.

It is an amenable number.

123320420432 is an abundant number, since it is smaller than the sum of its proper divisors (144378835600).

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

123320420432 is a wasteful number, since it uses less digits than its factorization.

123320420432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18937467 (or 18937461 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 123320420432 its reverse (234024023321), we get a palindrome (357344443753).

The spelling of 123320420432 in words is "one hundred twenty-three billion, three hundred twenty million, four hundred twenty thousand, four hundred thirty-two".