136504243 has 2 divisors, whose sum is σ = 136504244. Its totient is φ = 136504242.

The previous prime is 136504223. The next prime is 136504273. The reversal of 136504243 is 342405631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136504243 is a prime.

It is not a weakly prime, because it can be changed into another prime (136504213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68252121 + 68252122.

It is an arithmetic number, because the mean of its divisors is an integer number (68252122).

Almost surely, 2^136504243 is an apocalyptic number.

136504243 is a deficient number, since it is larger than the sum of its proper divisors (1).

136504243 is an equidigital number, since it uses as much as digits as its factorization.

136504243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 136504243 is about 11683.5030277738. The cubic root of 136504243 is about 514.8910983483.

Adding to 136504243 its reverse (342405631), we get a palindrome (478909874).

The spelling of 136504243 in words is "one hundred thirty-six million, five hundred four thousand, two hundred forty-three".