135185243 has 2 divisors, whose sum is σ = 135185244. Its totient is φ = 135185242.

The previous prime is 135185231. The next prime is 135185251. The reversal of 135185243 is 342581531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135185243 - 2¹⁰ = 135184219 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (135185213) 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, 67592621 + 67592622.

It is an arithmetic number, because the mean of its divisors is an integer number (67592622).

Almost surely, 2^135185243 is an apocalyptic number.

135185243 is a deficient number, since it is larger than the sum of its proper divisors (1).

135185243 is an equidigital number, since it uses as much as digits as its factorization.

135185243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 135185243 is about 11626.9188953910. The cubic root of 135185243 is about 513.2273145965.

The spelling of 135185243 in words is "one hundred thirty-five million, one hundred eighty-five thousand, two hundred forty-three".