135719 has 2 divisors, whose sum is σ = 135720. Its totient is φ = 135718.

The previous prime is 135701. The next prime is 135721. The reversal of 135719 is 917531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135719 - 2⁸ = 135463 is a prime.

It is a super-2 number, since 2×135719² = 36839293922, which contains 22 as substring.

Together with 135721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67859 + 67860.

It is an arithmetic number, because the mean of its divisors is an integer number (67860).

2¹³⁵⁷¹⁹ is an apocalyptic number.

135719 is a deficient number, since it is larger than the sum of its proper divisors (1).

135719 is an equidigital number, since it uses as much as digits as its factorization.

135719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 26.

The square root of 135719 is about 368.4005971765. The cubic root of 135719 is about 51.3901892483.

It can be divided in two parts, 13 and 5719, that multiplied together give a palindrome (74347).

The spelling of 135719 in words is "one hundred thirty-five thousand, seven hundred nineteen".