123745432 has 8 divisors (see below), whose sum is σ = 232022700. Its totient is φ = 61872712.

The previous prime is 123745409. The next prime is 123745441. The reversal of 123745432 is 234547321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 123745394 and 123745403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7734082 + ... + 7734097.

Almost surely, 2^123745432 is an apocalyptic number.

It is an amenable number.

123745432 is a deficient number, since it is larger than the sum of its proper divisors (108277268).

123745432 is a wasteful number, since it uses less digits than its factorization.

123745432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468185 (or 15468181 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 123745432 is about 11124.0924124173. The cubic root of 123745432 is about 498.3216150183.

The spelling of 123745432 in words is "one hundred twenty-three million, seven hundred forty-five thousand, four hundred thirty-two".