205003042 has 4 divisors (see below), whose sum is σ = 307504566. Its totient is φ = 102501520.

The previous prime is 205003037. The next prime is 205003067. The reversal of 205003042 is 240300502.

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., 183575401 + 21427641 = 13549^2 + 4629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51250759 + ... + 51250762.

Almost surely, 2^205003042 is an apocalyptic number.

205003042 is a deficient number, since it is larger than the sum of its proper divisors (102501524).

205003042 is a wasteful number, since it uses less digits than its factorization.

205003042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102501523.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 205003042 is about 14317.9272941303. The cubic root of 205003042 is about 589.6397705278.

Adding to 205003042 its reverse (240300502), we get a palindrome (445303544).

The spelling of 205003042 in words is "two hundred five million, three thousand, forty-two".