205245042 has 8 divisors (see below), whose sum is σ = 410490096. Its totient is φ = 68415012.

The previous prime is 205245023. The next prime is 205245059. The reversal of 205245042 is 240542502.

It is a happy number.

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

205245042 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17103748 + ... + 17103759.

It is an arithmetic number, because the mean of its divisors is an integer number (51311262).

Almost surely, 2^205245042 is an apocalyptic number.

205245042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205245042 is a wasteful number, since it uses less digits than its factorization.

205245042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34207512.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 205245042 is about 14326.3757454564. The cubic root of 205245042 is about 589.8716967010.

Adding to 205245042 its reverse (240542502), we get a palindrome (445787544).

The spelling of 205245042 in words is "two hundred five million, two hundred forty-five thousand, forty-two".