204202423 has 4 divisors (see below), whose sum is σ = 205425360. Its totient is φ = 202979488.

The previous prime is 204202421. The next prime is 204202469. The reversal of 204202423 is 324202402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204202423 - 2¹ = 204202421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204202423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204202421) 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, 611218 + ... + 611551.

It is an arithmetic number, because the mean of its divisors is an integer number (51356340).

Almost surely, 2^204202423 is an apocalyptic number.

204202423 is a deficient number, since it is larger than the sum of its proper divisors (1222937).

204202423 is a wasteful number, since it uses less digits than its factorization.

204202423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222936.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 204202423 is about 14289.9413224827. The cubic root of 204202423 is about 588.8711759331.

Adding to 204202423 its reverse (324202402), we get a palindrome (528404825).

The spelling of 204202423 in words is "two hundred four million, two hundred two thousand, four hundred twenty-three".