204542142 has 64 divisors (see below), whose sum is σ = 491487744. Its totient is φ = 55520640.

The previous prime is 204542141. The next prime is 204542161. The reversal of 204542142 is 241245402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204542141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65292 + ... + 68352.

It is an arithmetic number, because the mean of its divisors is an integer number (7679496).

Almost surely, 2^204542142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204542142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245743872).

204542142 is an abundant number, since it is smaller than the sum of its proper divisors (286945602).

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

204542142 is a wasteful number, since it uses less digits than its factorization.

204542142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 204542142 is about 14301.8230306489. The cubic root of 204542142 is about 589.1975512508.

Adding to 204542142 its reverse (241245402), we get a palindrome (445787544).

The spelling of 204542142 in words is "two hundred four million, five hundred forty-two thousand, one hundred forty-two".