324432421 has 8 divisors (see below), whose sum is σ = 326772824. Its totient is φ = 322099200.

The previous prime is 324432413. The next prime is 324432443. The reversal of 324432421 is 124234423.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 94303521 + 230128900 = 9711^2 + 15170^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 324432421 - 2³ = 324432413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324432481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114595 + ... + 117391.

It is an arithmetic number, because the mean of its divisors is an integer number (40846603).

Almost surely, 2^324432421 is an apocalyptic number.

It is an amenable number.

324432421 is a deficient number, since it is larger than the sum of its proper divisors (2340403).

324432421 is a wasteful number, since it uses less digits than its factorization.

324432421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591.

The product of its digits is 4608, while the sum is 25.

The square root of 324432421 is about 18012.0076893166. The cubic root of 324432421 is about 687.1339643140.

Adding to 324432421 its reverse (124234423), we get a palindrome (448666844).

The spelling of 324432421 in words is "three hundred twenty-four million, four hundred thirty-two thousand, four hundred twenty-one".