204100102442 has 8 divisors (see below), whose sum is σ = 309590043300. Its totient is φ = 100903421344.

The previous prime is 204100102433. The next prime is 204100102447. The reversal of 204100102442 is 244201001402.

It can be written as a sum of positive squares in 2 ways, for example, as 204097036441 + 3066001 = 451771^2 + 1751^2 .

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

It is not an unprimeable number, because it can be changed into a prime (204100102447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573314717 + ... + 573315072.

Almost surely, 2^204100102442 is an apocalyptic number.

204100102442 is a deficient number, since it is larger than the sum of its proper divisors (105489940858).

204100102442 is a wasteful number, since it uses less digits than its factorization.

204100102442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146629880.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 204100102442 its reverse (244201001402), we get a palindrome (448301103844).

The spelling of 204100102442 in words is "two hundred four billion, one hundred million, one hundred two thousand, four hundred forty-two".