204320440042 has 8 divisors (see below), whose sum is σ = 306499759776. Its totient is φ = 102153853452.

The previous prime is 204320440019. The next prime is 204320440057. The reversal of 204320440042 is 240044023402.

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

It is a junction number, because it is equal to n+sod(n) for n = 204320439989 and 204320440016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3143068 + ... + 3207415.

It is an arithmetic number, because the mean of its divisors is an integer number (38312469972).

Almost surely, 2^204320440042 is an apocalyptic number.

204320440042 is a deficient number, since it is larger than the sum of its proper divisors (102179319734).

204320440042 is a wasteful number, since it uses less digits than its factorization.

204320440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366572.

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 204320440042 its reverse (240044023402), we get a palindrome (444364463444).

The spelling of 204320440042 in words is "two hundred four billion, three hundred twenty million, four hundred forty thousand, forty-two".