205442210 has 16 divisors (see below), whose sum is σ = 385874496. Its totient is φ = 78603888.

The previous prime is 205442201. The next prime is 205442213. The reversal of 205442210 is 12244502.

It is a happy number.

205442210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205442213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446384 + ... + 446843.

It is an arithmetic number, because the mean of its divisors is an integer number (24117156).

Almost surely, 2^205442210 is an apocalyptic number.

205442210 is a deficient number, since it is larger than the sum of its proper divisors (180432286).

205442210 is a wasteful number, since it uses less digits than its factorization.

205442210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893257.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 205442210 is about 14333.2553873850. The cubic root of 205442210 is about 590.0605223751.

Adding to 205442210 its reverse (12244502), we get a palindrome (217686712).

The spelling of 205442210 in words is "two hundred five million, four hundred forty-two thousand, two hundred ten".