421630232 has 16 divisors (see below), whose sum is σ = 807377760. Its totient is φ = 206329504.

The previous prime is 421630219. The next prime is 421630249. The reversal of 421630232 is 232036124.

It is a junction number, because it is equal to n+sod(n) for n = 421630198 and 421630207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560303 + ... + 561054.

It is an arithmetic number, because the mean of its divisors is an integer number (50461110).

Almost surely, 2^421630232 is an apocalyptic number.

It is an amenable number.

421630232 is a deficient number, since it is larger than the sum of its proper divisors (385747528).

421630232 is a wasteful number, since it uses less digits than its factorization.

421630232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121410 (or 1121406 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 421630232 is about 20533.6365994921. The cubic root of 421630232 is about 749.8549242355.

Adding to 421630232 its reverse (232036124), we get a palindrome (653666356).

The spelling of 421630232 in words is "four hundred twenty-one million, six hundred thirty thousand, two hundred thirty-two".