123143420142012 has 48 divisors (see below), whose sum is σ = 292055073723392. Its totient is φ = 40373506226880.

The previous prime is 123143420141999. The next prime is 123143420142031. The reversal of 123143420142012 is 210241024341321.

It is a happy number.

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, 18566013 + ... + 24310155.

Almost surely, 2^{123143420142012} is an apocalyptic number.

123143420142012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123143420142012 is an abundant number, since it is smaller than the sum of its proper divisors (168911653581380).

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

123143420142012 is a wasteful number, since it uses less digits than its factorization.

123143420142012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773498 (or 5773496 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 123143420142012 its reverse (210241024341321), we get a palindrome (333384444483333).

The spelling of 123143420142012 in words is "one hundred twenty-three trillion, one hundred forty-three billion, four hundred twenty million, one hundred forty-two thousand, twelve".