205240411 has 2 divisors, whose sum is σ = 205240412. Its totient is φ = 205240410.

The previous prime is 205240397. The next prime is 205240421. The reversal of 205240411 is 114042502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205240411 - 2⁵ = 205240379 is a prime.

It is not a weakly prime, because it can be changed into another prime (205240421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102620205 + 102620206.

It is an arithmetic number, because the mean of its divisors is an integer number (102620206).

Almost surely, 2^205240411 is an apocalyptic number.

205240411 is a deficient number, since it is larger than the sum of its proper divisors (1).

205240411 is an equidigital number, since it uses as much as digits as its factorization.

205240411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 205240411 is about 14326.2141195781. The cubic root of 205240411 is about 589.8672601888.

Adding to 205240411 its reverse (114042502), we get a palindrome (319282913).

The spelling of 205240411 in words is "two hundred five million, two hundred forty thousand, four hundred eleven".