204642212 has 36 divisors (see below), whose sum is σ = 374599680. Its totient is φ = 97810272.

The previous prime is 204642211. The next prime is 204642223. The reversal of 204642212 is 212246402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204642211) 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 11 ways as a sum of consecutive naturals, for example, 426989 + ... + 427467.

Almost surely, 2^204642212 is an apocalyptic number.

It is an amenable number.

204642212 is a deficient number, since it is larger than the sum of its proper divisors (169957468).

204642212 is a wasteful number, since it uses less digits than its factorization.

204642212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 204642212 is about 14305.3211078955. The cubic root of 204642212 is about 589.2936217324.

Adding to 204642212 its reverse (212246402), we get a palindrome (416888614).

The spelling of 204642212 in words is "two hundred four million, six hundred forty-two thousand, two hundred twelve".