204106642 has 16 divisors (see below), whose sum is σ = 309703680. Its totient is φ = 100876752.

The previous prime is 204106633. The next prime is 204106649. The reversal of 204106642 is 246601402.

It is not an unprimeable number, because it can be changed into a prime (204106649) 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 7 ways as a sum of consecutive naturals, for example, 121903 + ... + 123565.

It is an arithmetic number, because the mean of its divisors is an integer number (19356480).

Almost surely, 2^204106642 is an apocalyptic number.

204106642 is a deficient number, since it is larger than the sum of its proper divisors (105597038).

204106642 is a wasteful number, since it uses less digits than its factorization.

204106642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 204106642 is about 14286.5895860419. The cubic root of 204106642 is about 588.7790916667.

The spelling of 204106642 in words is "two hundred four million, one hundred six thousand, six hundred forty-two".