205255242 has 32 divisors (see below), whose sum is σ = 457516800. Its totient is φ = 68209344.

The previous prime is 205255231. The next prime is 205255279. The reversal of 205255242 is 242552502.

205255242 is a `hidden beast` number, since 20 + 52 + 552 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12559 + ... + 23837.

It is an arithmetic number, because the mean of its divisors is an integer number (14297400).

Almost surely, 2^205255242 is an apocalyptic number.

205255242 is an abundant number, since it is smaller than the sum of its proper divisors (252261558).

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

205255242 is a wasteful number, since it uses less digits than its factorization.

205255242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11627 (or 11621 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 205255242 is about 14326.7317277877. The cubic root of 205255242 is about 589.8814680968.

The spelling of 205255242 in words is "two hundred five million, two hundred fifty-five thousand, two hundred forty-two".