123534404720 has 80 divisors (see below), whose sum is σ = 287989656768. Its totient is φ = 49281146880.

The previous prime is 123534404689. The next prime is 123534404723. The reversal of 123534404720 is 27404435321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123534404723) 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, 72794912 + ... + 72796608.

Almost surely, 2^123534404720 is an apocalyptic number.

123534404720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123534404720 is an abundant number, since it is smaller than the sum of its proper divisors (164455252048).

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

123534404720 is a wasteful number, since it uses less digits than its factorization.

123534404720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618 (or 3612 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 123534404720 in words is "one hundred twenty-three billion, five hundred thirty-four million, four hundred four thousand, seven hundred twenty".