205042315 has 8 divisors (see below), whose sum is σ = 246375360. Its totient is φ = 163817472.

The previous prime is 205042307. The next prime is 205042333. The reversal of 205042315 is 513240502.

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

It is a cyclic number.

It is not a de Polignac number, because 205042315 - 2³ = 205042307 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 22819 + ... + 30508.

It is an arithmetic number, because the mean of its divisors is an integer number (30796920).

Almost surely, 2^205042315 is an apocalyptic number.

205042315 is a deficient number, since it is larger than the sum of its proper divisors (41333045).

205042315 is an equidigital number, since it uses as much as digits as its factorization.

205042315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54101.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 205042315 is about 14319.2986909276. The cubic root of 205042315 is about 589.6774210978.

Adding to 205042315 its reverse (513240502), we get a palindrome (718282817).

The spelling of 205042315 in words is "two hundred five million, forty-two thousand, three hundred fifteen".