123255330240020 has 96 divisors (see below), whose sum is σ = 304803695589120. Its totient is φ = 41393094364160.

The previous prime is 123255330240019. The next prime is 123255330240079. The reversal of 123255330240020 is 20042033552321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419831897 + ... + 420125376.

It is an arithmetic number, because the mean of its divisors is an integer number (3175038495720).

Almost surely, 2^{123255330240020} is an apocalyptic number.

123255330240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123255330240020 is an abundant number, since it is smaller than the sum of its proper divisors (181548365349100).

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

123255330240020 is a wasteful number, since it uses less digits than its factorization.

123255330240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839957345 (or 839957343 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 123255330240020 its reverse (20042033552321), we get a palindrome (143297363792341).

The spelling of 123255330240020 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, three hundred thirty million, two hundred forty thousand, twenty".