123404124432 has 40 divisors (see below), whose sum is σ = 318809791296. Its totient is φ = 41132669056.

The previous prime is 123404124419. The next prime is 123404124433. The reversal of 123404124432 is 234421404321.

It is a self number, because there is not a number n which added to its sum of digits gives 123404124432.

It is not an unprimeable number, because it can be changed into a prime (123404124433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154938 + ... + 1257254.

Almost surely, 2^123404124432 is an apocalyptic number.

123404124432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123404124432 is an abundant number, since it is smaller than the sum of its proper divisors (195405666864).

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

123404124432 is a wasteful number, since it uses less digits than its factorization.

123404124432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127455 (or 127449 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 123404124432 its reverse (234421404321), we get a palindrome (357825528753).

The spelling of 123404124432 in words is "one hundred twenty-three billion, four hundred four million, one hundred twenty-four thousand, four hundred thirty-two".