123400140144 has 20 divisors (see below), whose sum is σ = 318783695496. Its totient is φ = 41133380032.

The previous prime is 123400140133. The next prime is 123400140211. The reversal of 123400140144 is 441041004321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285418079 + ... + 1285418174.

Almost surely, 2^123400140144 is an apocalyptic number.

It is an amenable number.

123400140144 is an abundant number, since it is smaller than the sum of its proper divisors (195383555352).

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

123400140144 is a wasteful number, since it uses less digits than its factorization.

123400140144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570836264 (or 2570836258 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 123400140144 its reverse (441041004321), we get a palindrome (564441144465).

The spelling of 123400140144 in words is "one hundred twenty-three billion, four hundred million, one hundred forty thousand, one hundred forty-four".