123123313154142 has 96 divisors (see below), whose sum is σ = 305757585120000. Its totient is φ = 35076504000384.

The previous prime is 123123313154131. The next prime is 123123313154159. The reversal of 123123313154142 is 241451313321321.

123123313154142 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 2 + 331 + 315 + 4 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 123123313154097 and 123123313154106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191985234 + ... + 192625482.

It is an arithmetic number, because the mean of its divisors is an integer number (3184974845000).

Almost surely, 2^{123123313154142} is an apocalyptic number.

123123313154142 is an abundant number, since it is smaller than the sum of its proper divisors (182634271965858).

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

123123313154142 is a wasteful number, since it uses less digits than its factorization.

123123313154142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644670 (or 644667 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 123123313154142 its reverse (241451313321321), we get a palindrome (364574626475463).

The spelling of 123123313154142 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, three hundred thirteen million, one hundred fifty-four thousand, one hundred forty-two".