123142120332144 has 40 divisors (see below), whose sum is σ = 318217592056320. Its totient is φ = 41034412429248.

The previous prime is 123142120332073. The next prime is 123142120332151. The reversal of 123142120332144 is 441233021241321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404878114 + ... + 405182145.

It is an arithmetic number, because the mean of its divisors is an integer number (7955439801408).

Almost surely, 2^{123142120332144} is an apocalyptic number.

It is an amenable number.

123142120332144 is an abundant number, since it is smaller than the sum of its proper divisors (195075471724176).

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

123142120332144 is a wasteful number, since it uses less digits than its factorization.

123142120332144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810063437 (or 810063431 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 123142120332144 its reverse (441233021241321), we get a palindrome (564375141573465).

The spelling of 123142120332144 in words is "one hundred twenty-three trillion, one hundred forty-two billion, one hundred twenty million, three hundred thirty-two thousand, one hundred forty-four".