421253224 has 64 divisors (see below), whose sum is σ = 925344000. Its totient is φ = 176064000.

The previous prime is 421253221. The next prime is 421253267. The reversal of 421253224 is 422352124.

It is not an unprimeable number, because it can be changed into a prime (421253221) 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 15 ways as a sum of consecutive naturals, for example, 401052 + ... + 402100.

It is an arithmetic number, because the mean of its divisors is an integer number (14458500).

Almost surely, 2^421253224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421253224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462672000).

421253224 is an abundant number, since it is smaller than the sum of its proper divisors (504090776).

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

421253224 is a wasteful number, since it uses less digits than its factorization.

421253224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1230 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 421253224 is about 20524.4542923801. The cubic root of 421253224 is about 749.6313589829.

The spelling of 421253224 in words is "four hundred twenty-one million, two hundred fifty-three thousand, two hundred twenty-four".