123543042152120 has 64 divisors (see below), whose sum is σ = 281818163895840. Its totient is φ = 48733611724800.

The previous prime is 123543042152081. The next prime is 123543042152197. The reversal of 123543042152120 is 21251240345321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18520880 + ... + 24292160.

Almost surely, 2^{123543042152120} is an apocalyptic number.

123543042152120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123543042152120 is an abundant number, since it is smaller than the sum of its proper divisors (158275121743720).

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

123543042152120 is a wasteful number, since it uses less digits than its factorization.

123543042152120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778696 (or 5778692 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 123543042152120 its reverse (21251240345321), we get a palindrome (144794282497441).

The spelling of 123543042152120 in words is "one hundred twenty-three trillion, five hundred forty-three billion, forty-two million, one hundred fifty-two thousand, one hundred twenty".