135841 has 2 divisors, whose sum is σ = 135842. Its totient is φ = 135840.

The previous prime is 135829. The next prime is 135851. The reversal of 135841 is 148531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129600 + 6241 = 360^2 + 79^2 .

It is an emirp because it is prime and its reverse (148531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135841 - 2⁹ = 135329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67920 + 67921.

It is an arithmetic number, because the mean of its divisors is an integer number (67921).

2¹³⁵⁸⁴¹ is an apocalyptic number.

It is an amenable number.

135841 is a deficient number, since it is larger than the sum of its proper divisors (1).

135841 is an equidigital number, since it uses as much as digits as its factorization.

135841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 135841 is about 368.5661406044. The cubic root of 135841 is about 51.4055831268.

The spelling of 135841 in words is "one hundred thirty-five thousand, eight hundred forty-one".