205086242 has 8 divisors (see below), whose sum is σ = 312843600. Its totient is φ = 100805044.

The previous prime is 205086241. The next prime is 205086251. The reversal of 205086242 is 242680502.

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

It is not an unprimeable number, because it can be changed into a prime (205086241) 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, 868892 + ... + 869127.

It is an arithmetic number, because the mean of its divisors is an integer number (39105450).

Almost surely, 2^205086242 is an apocalyptic number.

205086242 is a deficient number, since it is larger than the sum of its proper divisors (107757358).

205086242 is a wasteful number, since it uses less digits than its factorization.

205086242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738080.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 205086242 is about 14320.8324478712. The cubic root of 205086242 is about 589.7195277081.

The spelling of 205086242 in words is "two hundred five million, eighty-six thousand, two hundred forty-two".