204042342 has 32 divisors (see below), whose sum is σ = 467050752. Its totient is φ = 58214304.

The previous prime is 204042337. The next prime is 204042343. The reversal of 204042342 is 243240402.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204042343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29968 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (14595336).

Almost surely, 2^204042342 is an apocalyptic number.

204042342 is an abundant number, since it is smaller than the sum of its proper divisors (263008410).

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

204042342 is a wasteful number, since it uses less digits than its factorization.

204042342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6972.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 204042342 is about 14284.3390466623. The cubic root of 204042342 is about 588.7172572069.

Adding to 204042342 its reverse (243240402), we get a palindrome (447282744).

The spelling of 204042342 in words is "two hundred four million, forty-two thousand, three hundred forty-two".