205240741 has 4 divisors (see below), whose sum is σ = 208052332. Its totient is φ = 202429152.

The previous prime is 205240727. The next prime is 205240747. The reversal of 205240741 is 147042502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78588225 + 126652516 = 8865^2 + 11254^2 .

It is a cyclic number.

It is not a de Polignac number, because 205240741 - 2⁵ = 205240709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205240747) 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, 1405686 + ... + 1405831.

It is an arithmetic number, because the mean of its divisors is an integer number (52013083).

Almost surely, 2^205240741 is an apocalyptic number.

It is an amenable number.

205240741 is a deficient number, since it is larger than the sum of its proper divisors (2811591).

205240741 is an equidigital number, since it uses as much as digits as its factorization.

205240741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811590.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 205240741 is about 14326.2256369220. The cubic root of 205240741 is about 589.8675763320.

The spelling of 205240741 in words is "two hundred five million, two hundred forty thousand, seven hundred forty-one".