432732421 has 12 divisors (see below), whose sum is σ = 476293216. Its totient is φ = 392859720.

The previous prime is 432732389. The next prime is 432732457. The reversal of 432732421 is 124237234.

It is not a de Polignac number, because 432732421 - 2⁵ = 432732389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 432732421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432732481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107776 + ... + 111718.

Almost surely, 2^432732421 is an apocalyptic number.

It is an amenable number.

432732421 is a deficient number, since it is larger than the sum of its proper divisors (43560795).

432732421 is a wasteful number, since it uses less digits than its factorization.

432732421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872 (or 4861 counting only the distinct ones).

The product of its digits is 8064, while the sum is 28.

The square root of 432732421 is about 20802.2215400183. The cubic root of 432732421 is about 756.3796075384.

Adding to 432732421 its reverse (124237234), we get a palindrome (556969655).

The spelling of 432732421 in words is "four hundred thirty-two million, seven hundred thirty-two thousand, four hundred twenty-one".