205142252 has 24 divisors (see below), whose sum is σ = 423521280. Its totient is φ = 85081680.

The previous prime is 205142243. The next prime is 205142279. The reversal of 205142252 is 252241502.

205142252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117302 + ... + 119037.

It is an arithmetic number, because the mean of its divisors is an integer number (17646720).

Almost surely, 2^205142252 is an apocalyptic number.

It is an amenable number.

205142252 is an abundant number, since it is smaller than the sum of its proper divisors (218379028).

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

205142252 is a wasteful number, since it uses less digits than its factorization.

205142252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236381 (or 236379 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 205142252 is about 14322.7878571178. The cubic root of 205142252 is about 589.7732078639.

Adding to 205142252 its reverse (252241502), we get a palindrome (457383754).

The spelling of 205142252 in words is "two hundred five million, one hundred forty-two thousand, two hundred fifty-two".