205142611 has 2 divisors, whose sum is σ = 205142612. Its totient is φ = 205142610.

The previous prime is 205142603. The next prime is 205142617. The reversal of 205142611 is 116241502.

205142611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205142611 - 2³ = 205142603 is a prime.

It is not a weakly prime, because it can be changed into another prime (205142617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102571305 + 102571306.

It is an arithmetic number, because the mean of its divisors is an integer number (102571306).

Almost surely, 2^205142611 is an apocalyptic number.

205142611 is a deficient number, since it is larger than the sum of its proper divisors (1).

205142611 is an equidigital number, since it uses as much as digits as its factorization.

205142611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 205142611 is about 14322.8003895886. The cubic root of 205142611 is about 589.7735518991.

The spelling of 205142611 in words is "two hundred five million, one hundred forty-two thousand, six hundred eleven".