205242203 has 8 divisors (see below), whose sum is σ = 207693360. Its totient is φ = 202798080.

The previous prime is 205242143. The next prime is 205242211. The reversal of 205242203 is 302242502.

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 205242203 - 2¹² = 205238107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205242253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77363 + ... + 79971.

It is an arithmetic number, because the mean of its divisors is an integer number (25961670).

Almost surely, 2^205242203 is an apocalyptic number.

205242203 is a deficient number, since it is larger than the sum of its proper divisors (2451157).

205242203 is an equidigital number, since it uses as much as digits as its factorization.

205242203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 205242203 is about 14326.2766621338. The cubic root of 205242203 is about 589.8689769382.

Adding to 205242203 its reverse (302242502), we get a palindrome (507484705).

The spelling of 205242203 in words is "two hundred five million, two hundred forty-two thousand, two hundred three".