421225124 has 12 divisors (see below), whose sum is σ = 739750704. Its totient is φ = 209867784.

The previous prime is 421225121. The next prime is 421225141. The reversal of 421225124 is 421522124.

It is a self number, because there is not a number n which added to its sum of digits gives 421225124.

It is not an unprimeable number, because it can be changed into a prime (421225121) 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 3 ways as a sum of consecutive naturals, for example, 184922 + ... + 187185.

It is an arithmetic number, because the mean of its divisors is an integer number (61645892).

Almost surely, 2^421225124 is an apocalyptic number.

It is an amenable number.

421225124 is a deficient number, since it is larger than the sum of its proper divisors (318525580).

421225124 is a wasteful number, since it uses less digits than its factorization.

421225124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372394 (or 372392 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 421225124 is about 20523.7697317038. The cubic root of 421225124 is about 749.6146903789.

Adding to 421225124 its reverse (421522124), we get a palindrome (842747248).

The spelling of 421225124 in words is "four hundred twenty-one million, two hundred twenty-five thousand, one hundred twenty-four".