204420205 has 32 divisors (see below), whose sum is σ = 284601600. Its totient is φ = 139476480.

The previous prime is 204420197. The next prime is 204420241. The reversal of 204420205 is 502024402.

It is not a de Polignac number, because 204420205 - 2³ = 204420197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65521 + ... + 68569.

It is an arithmetic number, because the mean of its divisors is an integer number (8893800).

Almost surely, 2^204420205 is an apocalyptic number.

It is an amenable number.

204420205 is a deficient number, since it is larger than the sum of its proper divisors (80181395).

204420205 is a wasteful number, since it uses less digits than its factorization.

204420205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 204420205 is about 14297.5594071156. The cubic root of 204420205 is about 589.0804453698.

Adding to 204420205 its reverse (502024402), we get a palindrome (706444607).

The spelling of 204420205 in words is "two hundred four million, four hundred twenty thousand, two hundred five".