420443224 has 16 divisors (see below), whose sum is σ = 800098200. Its totient is φ = 207083712.

The previous prime is 420443183. The next prime is 420443227. The reversal of 420443224 is 422344024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420443227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391669 + ... + 392740.

Almost surely, 2^420443224 is an apocalyptic number.

It is an amenable number.

420443224 is a deficient number, since it is larger than the sum of its proper divisors (379654976).

420443224 is a wasteful number, since it uses less digits than its factorization.

420443224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784482 (or 784478 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 420443224 is about 20504.7122388977. The cubic root of 420443224 is about 749.1505784888.

Adding to 420443224 its reverse (422344024), we get a palindrome (842787248).

The spelling of 420443224 in words is "four hundred twenty million, four hundred forty-three thousand, two hundred twenty-four".