123421230503042 has 16 divisors (see below), whose sum is σ = 193189669522560. Its totient is φ = 59024913247872.

The previous prime is 123421230502991. The next prime is 123421230503047. The reversal of 123421230503042 is 240305032124321.

It is not an unprimeable number, because it can be changed into a prime (123421230503047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58769942 + ... + 60833777.

It is an arithmetic number, because the mean of its divisors is an integer number (12074354345160).

Almost surely, 2^{123421230503042} is an apocalyptic number.

123421230503042 is a deficient number, since it is larger than the sum of its proper divisors (69768439019518).

123421230503042 is a wasteful number, since it uses less digits than its factorization.

123421230503042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119626177.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 123421230503042 its reverse (240305032124321), we get a palindrome (363726262627363).

The spelling of 123421230503042 in words is "one hundred twenty-three trillion, four hundred twenty-one billion, two hundred thirty million, five hundred three thousand, forty-two".