204002434105 has 4 divisors (see below), whose sum is σ = 244802920932. Its totient is φ = 163201947280.

The previous prime is 204002434093. The next prime is 204002434121. The reversal of 204002434105 is 501434200402.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23918478336 + 180083955769 = 154656^2 + 424363^2 .

It is a de Polignac number, because none of the positive numbers 2^k-204002434105 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 204002434105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20400243406 + ... + 20400243415.

It is an arithmetic number, because the mean of its divisors is an integer number (61200730233).

Almost surely, 2^204002434105 is an apocalyptic number.

It is an amenable number.

204002434105 is a deficient number, since it is larger than the sum of its proper divisors (40800486827).

204002434105 is an equidigital number, since it uses as much as digits as its factorization.

204002434105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40800486826.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 204002434105 its reverse (501434200402), we get a palindrome (705436634507).

The spelling of 204002434105 in words is "two hundred four billion, two million, four hundred thirty-four thousand, one hundred five".