123013234320042 has 64 divisors (see below), whose sum is σ = 268462108896768. Its totient is φ = 37267072920000.

The previous prime is 123013234320001. The next prime is 123013234320043. The reversal of 123013234320042 is 240023432310321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123013234319991 and 123013234320009.

It is not an unprimeable number, because it can be changed into a prime (123013234320043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5940649053 + ... + 5940669759.

It is an arithmetic number, because the mean of its divisors is an integer number (4194720451512).

Almost surely, 2^{123013234320042} is an apocalyptic number.

123013234320042 is an abundant number, since it is smaller than the sum of its proper divisors (145448874576726).

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

123013234320042 is a wasteful number, since it uses less digits than its factorization.

123013234320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39715.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 123013234320042 its reverse (240023432310321), we get a palindrome (363036666630363).

The spelling of 123013234320042 in words is "one hundred twenty-three trillion, thirteen billion, two hundred thirty-four million, three hundred twenty thousand, forty-two".