205420202 has 24 divisors (see below), whose sum is σ = 339808644. Its totient is φ = 92582784.

The previous prime is 205420181. The next prime is 205420207. The reversal of 205420202 is 202024502.

It can be written as a sum of positive squares in 2 ways, for example, as 185804161 + 19616041 = 13631^2 + 4429^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205420207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45938 + ... + 50210.

Almost surely, 2^205420202 is an apocalyptic number.

205420202 is a deficient number, since it is larger than the sum of its proper divisors (134388442).

205420202 is a wasteful number, since it uses less digits than its factorization.

205420202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 205420202 is about 14332.4876417180. The cubic root of 205420202 is about 590.0394515418.

Adding to 205420202 its reverse (202024502), we get a palindrome (407444704).

The spelling of 205420202 in words is "two hundred five million, four hundred twenty thousand, two hundred two".