135842263 has 2 divisors, whose sum is σ = 135842264. Its totient is φ = 135842262.

The previous prime is 135842251. The next prime is 135842321. The reversal of 135842263 is 362248531.

It is a weak prime.

It is an emirp because it is prime and its reverse (362248531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135842263 is a prime.

It is a super-2 number, since 2×135842263² = 36906240833922338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135842363) 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, 67921131 + 67921132.

It is an arithmetic number, because the mean of its divisors is an integer number (67921132).

Almost surely, 2^135842263 is an apocalyptic number.

135842263 is a deficient number, since it is larger than the sum of its proper divisors (1).

135842263 is an equidigital number, since it uses as much as digits as its factorization.

135842263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 135842263 is about 11655.1389095111. The cubic root of 135842263 is about 514.0574244311.

The spelling of 135842263 in words is "one hundred thirty-five million, eight hundred forty-two thousand, two hundred sixty-three".