421225320 has 64 divisors (see below), whose sum is σ = 1338016320. Its totient is φ = 105718784.

The previous prime is 421225229. The next prime is 421225331. The reversal of 421225320 is 23522124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101202 + ... + 105281.

It is an arithmetic number, because the mean of its divisors is an integer number (20906505).

Almost surely, 2^421225320 is an apocalyptic number.

421225320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421225320 is an abundant number, since it is smaller than the sum of its proper divisors (916791000).

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

421225320 is a wasteful number, since it uses less digits than its factorization.

421225320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206514 (or 206510 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 421225320 is about 20523.7745066545. The cubic root of 421225320 is about 749.6148066464.

Adding to 421225320 its reverse (23522124), we get a palindrome (444747444).

The spelling of 421225320 in words is "four hundred twenty-one million, two hundred twenty-five thousand, three hundred twenty".