421630324 has 6 divisors (see below), whose sum is σ = 737853074. Its totient is φ = 210815160.

The previous prime is 421630301. The next prime is 421630357. The reversal of 421630324 is 423036124.

It can be written as a sum of positive squares in only one way, i.e., 375661924 + 45968400 = 19382^2 + 6780^2 .

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, 52703787 + ... + 52703794.

Almost surely, 2^421630324 is an apocalyptic number.

It is an amenable number.

421630324 is a deficient number, since it is larger than the sum of its proper divisors (316222750).

421630324 is a wasteful number, since it uses less digits than its factorization.

421630324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105407585 (or 105407583 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 421630324 is about 20533.6388397186. The cubic root of 421630324 is about 749.8549787751.

Adding to 421630324 its reverse (423036124), we get a palindrome (844666448).

The spelling of 421630324 in words is "four hundred twenty-one million, six hundred thirty thousand, three hundred twenty-four".