136415243 has 2 divisors, whose sum is σ = 136415244. Its totient is φ = 136415242.

The previous prime is 136415203. The next prime is 136415249. The reversal of 136415243 is 342514631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136415243 - 2⁶ = 136415179 is a prime.

It is not a weakly prime, because it can be changed into another prime (136415249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68207621 + 68207622.

It is an arithmetic number, because the mean of its divisors is an integer number (68207622).

Almost surely, 2^136415243 is an apocalyptic number.

136415243 is a deficient number, since it is larger than the sum of its proper divisors (1).

136415243 is an equidigital number, since it uses as much as digits as its factorization.

136415243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 136415243 is about 11679.6936175569. The cubic root of 136415243 is about 514.7791719846.

Adding to 136415243 its reverse (342514631), we get a palindrome (478929874).

The spelling of 136415243 in words is "one hundred thirty-six million, four hundred fifteen thousand, two hundred forty-three".