6421204 has 12 divisors (see below), whose sum is σ = 11285428. Its totient is φ = 3196800.

The previous prime is 6421201. The next prime is 6421211. The reversal of 6421204 is 4021246.

It can be written as a sum of positive squares in 2 ways, for example, as 5522500 + 898704 = 2350^2 + 948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421201) 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, 2367 + ... + 4294.

Almost surely, 2^6421204 is an apocalyptic number.

It is an amenable number.

6421204 is a deficient number, since it is larger than the sum of its proper divisors (4864224).

6421204 is a wasteful number, since it uses less digits than its factorization.

6421204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906 (or 6904 counting only the distinct ones).

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

The square root of 6421204 is about 2534.0094711741. The cubic root of 6421204 is about 185.8683695037.

The spelling of 6421204 in words is "six million, four hundred twenty-one thousand, two hundred four".