204021242 has 8 divisors (see below), whose sum is σ = 306554976. Its totient is φ = 101836252.

The previous prime is 204021241. The next prime is 204021253. The reversal of 204021242 is 242120402.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 204021242.

It is not an unprimeable number, because it can be changed into a prime (204021241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85718 + ... + 88065.

It is an arithmetic number, because the mean of its divisors is an integer number (38319372).

Almost surely, 2^204021242 is an apocalyptic number.

204021242 is a deficient number, since it is larger than the sum of its proper divisors (102533734).

204021242 is a wasteful number, since it uses less digits than its factorization.

204021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174372.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 204021242 is about 14283.6004564675. The cubic root of 204021242 is about 588.6969634414.

Adding to 204021242 its reverse (242120402), we get a palindrome (446141644).

The spelling of 204021242 in words is "two hundred four million, twenty-one thousand, two hundred forty-two".