421424224 has 48 divisors (see below), whose sum is σ = 895279392. Its totient is φ = 194116608.

The previous prime is 421424221. The next prime is 421424243. The reversal of 421424224 is 422424124.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421424221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395917 + ... + 396979.

It is an arithmetic number, because the mean of its divisors is an integer number (18651654).

Almost surely, 2^421424224 is an apocalyptic number.

It is an amenable number.

421424224 is an abundant number, since it is smaller than the sum of its proper divisors (473855168).

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

421424224 is a wasteful number, since it uses less digits than its factorization.

421424224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2031 counting only the distinct ones).

The product of its digits is 4096, while the sum is 25.

The square root of 421424224 is about 20528.6196321136. The cubic root of 421424224 is about 749.7327782829.

Adding to 421424224 its reverse (422424124), we get a palindrome (843848348).

The spelling of 421424224 in words is "four hundred twenty-one million, four hundred twenty-four thousand, two hundred twenty-four".