205274036042 has 4 divisors (see below), whose sum is σ = 307911054066. Its totient is φ = 102637018020.

The previous prime is 205274036039. The next prime is 205274036053. The reversal of 205274036042 is 240630472502.

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

It can be written as a sum of positive squares in only one way, i.e., 204547248361 + 726787681 = 452269^2 + 26959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 205274035993 and 205274036011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51318509009 + ... + 51318509012.

Almost surely, 2^205274036042 is an apocalyptic number.

205274036042 is a deficient number, since it is larger than the sum of its proper divisors (102637018024).

205274036042 is a wasteful number, since it uses less digits than its factorization.

205274036042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102637018023.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 205274036042 in words is "two hundred five billion, two hundred seventy-four million, thirty-six thousand, forty-two".