123400400515132 has 24 divisors (see below), whose sum is σ = 232611161636000. Its totient is φ = 56942063246016.

The previous prime is 123400400515109. The next prime is 123400400515141. The reversal of 123400400515132 is 231515004004321.

It is a junction number, because it is equal to n+sod(n) for n = 123400400515094 and 123400400515103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249078507 + ... + 249573442.

Almost surely, 2^{123400400515132} is an apocalyptic number.

It is an amenable number.

123400400515132 is a deficient number, since it is larger than the sum of its proper divisors (109210761120868).

123400400515132 is a wasteful number, since it uses less digits than its factorization.

123400400515132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498656725 (or 498656723 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 123400400515132 its reverse (231515004004321), we get a palindrome (354915404519453).

The spelling of 123400400515132 in words is "one hundred twenty-three trillion, four hundred billion, four hundred million, five hundred fifteen thousand, one hundred thirty-two".