204440440042 has 8 divisors (see below), whose sum is σ = 309374471556. Its totient is φ = 101315616192.

The previous prime is 204440440037. The next prime is 204440440103. The reversal of 204440440042 is 240044044402.

It can be written as a sum of positive squares in 2 ways, for example, as 121939941601 + 82500498441 = 349199^2 + 287229^2 .

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

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, 452301633 + ... + 452302084.

Almost surely, 2^204440440042 is an apocalyptic number.

204440440042 is a deficient number, since it is larger than the sum of its proper divisors (104934031514).

204440440042 is a wasteful number, since it uses less digits than its factorization.

204440440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904603832.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 204440440042 its reverse (240044044402), we get a palindrome (444484484444).

The spelling of 204440440042 in words is "two hundred four billion, four hundred forty million, four hundred forty thousand, forty-two".