136571243 has 2 divisors, whose sum is σ = 136571244. Its totient is φ = 136571242.

The previous prime is 136571207. The next prime is 136571257. The reversal of 136571243 is 342175631.

136571243 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 136571243 - 2¹² = 136567147 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136571203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68285621 + 68285622.

It is an arithmetic number, because the mean of its divisors is an integer number (68285622).

Almost surely, 2^136571243 is an apocalyptic number.

136571243 is a deficient number, since it is larger than the sum of its proper divisors (1).

136571243 is an equidigital number, since it uses as much as digits as its factorization.

136571243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 136571243 is about 11686.3699667604. The cubic root of 136571243 is about 514.9753254273.

The spelling of 136571243 in words is "one hundred thirty-six million, five hundred seventy-one thousand, two hundred forty-three".