123040231424540 has 24 divisors (see below), whose sum is σ = 258384754849200. Its totient is φ = 49216041358848.

The previous prime is 123040231424531. The next prime is 123040231424597. The reversal of 123040231424540 is 45424132040321.

123040231424540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 123040231424540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20942636 + ... + 26166284.

It is an arithmetic number, because the mean of its divisors is an integer number (10766031452050).

Almost surely, 2^{123040231424540} is an apocalyptic number.

123040231424540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123040231424540 is an abundant number, since it is smaller than the sum of its proper divisors (135344523424660).

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

123040231424540 is a wasteful number, since it uses less digits than its factorization.

123040231424540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401381 (or 6401379 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 123040231424540 its reverse (45424132040321), we get a palindrome (168464363464861).

The spelling of 123040231424540 in words is "one hundred twenty-three trillion, forty billion, two hundred thirty-one million, four hundred twenty-four thousand, five hundred forty".