421021324 has 12 divisors (see below), whose sum is σ = 740092864. Its totient is φ = 209566224.

The previous prime is 421021319. The next prime is 421021343. The reversal of 421021324 is 423120124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235107 + ... + 236890.

Almost surely, 2^421021324 is an apocalyptic number.

It is an amenable number.

421021324 is a deficient number, since it is larger than the sum of its proper divisors (319071540).

421021324 is a wasteful number, since it uses less digits than its factorization.

421021324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472224 (or 472222 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421021324 is about 20518.8041561881. The cubic root of 421021324 is about 749.4937763196.

Adding to 421021324 its reverse (423120124), we get a palindrome (844141448).

The spelling of 421021324 in words is "four hundred twenty-one million, twenty-one thousand, three hundred twenty-four".