205042305134 has 8 divisors (see below), whose sum is σ = 308102099448. Its totient is φ = 102341605320.

The previous prime is 205042305119. The next prime is 205042305271. The reversal of 205042305134 is 431503240502.

It is a happy number.

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 = 205042305097 and 205042305106.

It is a congruent number.

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, 89772197 + ... + 89774480.

It is an arithmetic number, because the mean of its divisors is an integer number (38512762431).

Almost surely, 2^205042305134 is an apocalyptic number.

205042305134 is a deficient number, since it is larger than the sum of its proper divisors (103059794314).

205042305134 is a wasteful number, since it uses less digits than its factorization.

205042305134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179547250.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 205042305134 its reverse (431503240502), we get a palindrome (636545545636).

The spelling of 205042305134 in words is "two hundred five billion, forty-two million, three hundred five thousand, one hundred thirty-four".