421042224 has 40 divisors (see below), whose sum is σ = 1088702640. Its totient is φ = 140217088.

The previous prime is 421042207. The next prime is 421042249. The reversal of 421042224 is 422240124.

It is a self number, because there is not a number n which added to its sum of digits gives 421042224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57862 + ... + 64730.

It is an arithmetic number, because the mean of its divisors is an integer number (27217566).

Almost surely, 2^421042224 is an apocalyptic number.

It is an amenable number.

421042224 is an abundant number, since it is smaller than the sum of its proper divisors (667660416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421042224 is a wasteful number, since it uses less digits than its factorization.

421042224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157 (or 8151 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 421042224 is about 20519.3134388069. The cubic root of 421042224 is about 749.5061780356.

Adding to 421042224 its reverse (422240124), we get a palindrome (843282348).

The spelling of 421042224 in words is "four hundred twenty-one million, forty-two thousand, two hundred twenty-four".