205351442 has 4 divisors (see below), whose sum is σ = 308027166. Its totient is φ = 102675720.

The previous prime is 205351423. The next prime is 205351451. The reversal of 205351442 is 244153502.

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 only one way, i.e., 180660481 + 24690961 = 13441^2 + 4969^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51337859 + ... + 51337862.

Almost surely, 2^205351442 is an apocalyptic number.

205351442 is a deficient number, since it is larger than the sum of its proper divisors (102675724).

205351442 is a wasteful number, since it uses less digits than its factorization.

205351442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102675723.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 205351442 is about 14330.0886947709. The cubic root of 205351442 is about 589.9736098509.

The spelling of 205351442 in words is "two hundred five million, three hundred fifty-one thousand, four hundred forty-two".