205442315 has 24 divisors (see below), whose sum is σ = 274210128. Its totient is φ = 147588480.

The previous prime is 205442309. The next prime is 205442357. The reversal of 205442315 is 513244502.

It is a happy number.

It is not a de Polignac number, because 205442315 - 2⁴ = 205442299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27980 + ... + 34550.

It is an arithmetic number, because the mean of its divisors is an integer number (11425422).

Almost surely, 2^205442315 is an apocalyptic number.

205442315 is a deficient number, since it is larger than the sum of its proper divisors (68767813).

205442315 is a wasteful number, since it uses less digits than its factorization.

205442315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6639 (or 6626 counting only the distinct ones).

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

The square root of 205442315 is about 14333.2590501951. The cubic root of 205442315 is about 590.0606229003.

Adding to 205442315 its reverse (513244502), we get a palindrome (718686817).

The spelling of 205442315 in words is "two hundred five million, four hundred forty-two thousand, three hundred fifteen".