204942 has 8 divisors (see below), whose sum is σ = 409896. Its totient is φ = 68312.

The previous prime is 204931. The next prime is 204947. The reversal of 204942 is 249402.

It is a sphenic number, since it is the product of 3 distinct primes.

204942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204947) by changing a digit.

204942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17073 + ... + 17084.

It is an arithmetic number, because the mean of its divisors is an integer number (51237).

2²⁰⁴⁹⁴² is an apocalyptic number.

204942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204942 is a wasteful number, since it uses less digits than its factorization.

204942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34162.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 204942 is about 452.7052020907. The cubic root of 204942 is about 58.9581240723.

The spelling of 204942 in words is "two hundred four thousand, nine hundred forty-two".