123030142345520 has 40 divisors (see below), whose sum is σ = 286947431425584. Its totient is φ = 49056813846272.

The previous prime is 123030142345499. The next prime is 123030142345571. The reversal of 123030142345520 is 25543241030321.

123030142345520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2425647794 + ... + 2425698513.

Almost surely, 2^{123030142345520} is an apocalyptic number.

123030142345520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030142345520 is an abundant number, since it is smaller than the sum of its proper divisors (163917289080064).

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

123030142345520 is a wasteful number, since it uses less digits than its factorization.

123030142345520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851346637 (or 4851346631 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 123030142345520 its reverse (25543241030321), we get a palindrome (148573383375841).

The spelling of 123030142345520 in words is "one hundred twenty-three trillion, thirty billion, one hundred forty-two million, three hundred forty-five thousand, five hundred twenty".