205240041 has 8 divisors (see below), whose sum is σ = 304059360. Its totient is φ = 136826676.

The previous prime is 205240037. The next prime is 205240067. The reversal of 205240041 is 140042502.

It is not a de Polignac number, because 205240041 - 2² = 205240037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205239996 and 205240023.

It is not an unprimeable number, because it can be changed into a prime (205240241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3800715 + ... + 3800768.

It is an arithmetic number, because the mean of its divisors is an integer number (38007420).

Almost surely, 2^205240041 is an apocalyptic number.

It is an amenable number.

205240041 is a deficient number, since it is larger than the sum of its proper divisors (98819319).

205240041 is an equidigital number, since it uses as much as digits as its factorization.

205240041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7601492 (or 7601486 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205240041 is about 14326.2012061816. The cubic root of 205240041 is about 589.8669057248.

Adding to 205240041 its reverse (140042502), we get a palindrome (345282543).

The spelling of 205240041 in words is "two hundred five million, two hundred forty thousand, forty-one".