205045122 has 8 divisors (see below), whose sum is σ = 410090256. Its totient is φ = 68348372.

The previous prime is 205045117. The next prime is 205045123. The reversal of 205045122 is 221540502.

It is a happy number.

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

205045122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (205045123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17087088 + ... + 17087099.

It is an arithmetic number, because the mean of its divisors is an integer number (51261282).

Almost surely, 2^205045122 is an apocalyptic number.

205045122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205045122 is a wasteful number, since it uses less digits than its factorization.

205045122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34174192.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 205045122 is about 14319.3967051688. The cubic root of 205045122 is about 589.6801119521.

Adding to 205045122 its reverse (221540502), we get a palindrome (426585624).

The spelling of 205045122 in words is "two hundred five million, forty-five thousand, one hundred twenty-two".