421421204 has 24 divisors (see below), whose sum is σ = 746124288. Its totient is φ = 208251360.

The previous prime is 421421201. The next prime is 421421213. The reversal of 421421204 is 402124124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421421201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387149 + ... + 388235.

It is an arithmetic number, because the mean of its divisors is an integer number (31088512).

Almost surely, 2^421421204 is an apocalyptic number.

It is an amenable number.

421421204 is a deficient number, since it is larger than the sum of its proper divisors (324703084).

421421204 is a wasteful number, since it uses less digits than its factorization.

421421204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135 (or 2133 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 421421204 is about 20528.5460761351. The cubic root of 421421204 is about 749.7309873730.

Adding to 421421204 its reverse (402124124), we get a palindrome (823545328).

The spelling of 421421204 in words is "four hundred twenty-one million, four hundred twenty-one thousand, two hundred four".