135724279 has 2 divisors, whose sum is σ = 135724280. Its totient is φ = 135724278.

The previous prime is 135724271. The next prime is 135724289. The reversal of 135724279 is 972427531.

It is a weak prime.

It is an emirp because it is prime and its reverse (972427531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135724279 - 2³ = 135724271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135724271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67862139 + 67862140.

It is an arithmetic number, because the mean of its divisors is an integer number (67862140).

Almost surely, 2^135724279 is an apocalyptic number.

135724279 is a deficient number, since it is larger than the sum of its proper divisors (1).

135724279 is an equidigital number, since it uses as much as digits as its factorization.

135724279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 135724279 is about 11650.0763516811. The cubic root of 135724279 is about 513.9085553987.

The spelling of 135724279 in words is "one hundred thirty-five million, seven hundred twenty-four thousand, two hundred seventy-nine".