123043642534400 has 240 divisors, whose sum is σ = 355510493342400. Its totient is φ = 42186390220800.

The previous prime is 123043642534387. The next prime is 123043642534441. The reversal of 123043642534400 is 4435246340321.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9622406 + ... + 18403205.

It is an arithmetic number, because the mean of its divisors is an integer number (1481293722260).

Almost surely, 2^{123043642534400} is an apocalyptic number.

123043642534400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123043642534400 is an abundant number, since it is smaller than the sum of its proper divisors (232466850808000).

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

123043642534400 is an frugal number, since it uses more digits than its factorization.

123043642534400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28025660 (or 28025625 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 123043642534400 its reverse (4435246340321), we get a palindrome (127478888874721).

The spelling of 123043642534400 in words is "one hundred twenty-three trillion, forty-three billion, six hundred forty-two million, five hundred thirty-four thousand, four hundred".