205313242 has 8 divisors (see below), whose sum is σ = 308156436. Its totient is φ = 102594432.

The previous prime is 205313239. The next prime is 205313257. The reversal of 205313242 is 242313502.

It can be written as a sum of positive squares in 2 ways, for example, as 152300281 + 53012961 = 12341^2 + 7281^2 .

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

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, 26853 + ... + 33640.

Almost surely, 2^205313242 is an apocalyptic number.

205313242 is a deficient number, since it is larger than the sum of its proper divisors (102843194).

205313242 is a wasteful number, since it uses less digits than its factorization.

205313242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62192.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 205313242 is about 14328.7557729204. The cubic root of 205313242 is about 589.9370247828.

Adding to 205313242 its reverse (242313502), we get a palindrome (447626744).

The spelling of 205313242 in words is "two hundred five million, three hundred thirteen thousand, two hundred forty-two".