205552142 has 4 divisors (see below), whose sum is σ = 308328216. Its totient is φ = 102776070.

The previous prime is 205552097. The next prime is 205552153. The reversal of 205552142 is 241255502.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51388034 + ... + 51388037.

It is an arithmetic number, because the mean of its divisors is an integer number (77082054).

Almost surely, 2^205552142 is an apocalyptic number.

205552142 is a deficient number, since it is larger than the sum of its proper divisors (102776074).

205552142 is a wasteful number, since it uses less digits than its factorization.

205552142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102776073.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 205552142 is about 14337.0897325782. The cubic root of 205552142 is about 590.1657506155.

The spelling of 205552142 in words is "two hundred five million, five hundred fifty-two thousand, one hundred forty-two".