205836042 has 8 divisors (see below), whose sum is σ = 411672096. Its totient is φ = 68612012.

The previous prime is 205836023. The next prime is 205836049. The reversal of 205836042 is 240638502.

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

205836042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (205836049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17152998 + ... + 17153009.

It is an arithmetic number, because the mean of its divisors is an integer number (51459012).

Almost surely, 2^205836042 is an apocalyptic number.

205836042 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.

205836042 is a wasteful number, since it uses less digits than its factorization.

205836042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34306012.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 205836042 is about 14346.9872098640. The cubic root of 205836042 is about 590.4373296859.

The spelling of 205836042 in words is "two hundred five million, eight hundred thirty-six thousand, forty-two".