123400432 has 10 divisors (see below), whose sum is σ = 239088368. Its totient is φ = 61700208.

The previous prime is 123400397. The next prime is 123400463. The reversal of 123400432 is 234004321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856248 + ... + 3856279.

Almost surely, 2^123400432 is an apocalyptic number.

It is an amenable number.

123400432 is a deficient number, since it is larger than the sum of its proper divisors (115687936).

123400432 is an equidigital number, since it uses as much as digits as its factorization.

123400432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7712535 (or 7712529 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 123400432 is about 11108.5747060548. The cubic root of 123400432 is about 497.8580801275.

Adding to 123400432 its reverse (234004321), we get a palindrome (357404753).

The spelling of 123400432 in words is "one hundred twenty-three million, four hundred thousand, four hundred thirty-two".