135240241 has 2 divisors, whose sum is σ = 135240242. Its totient is φ = 135240240.

The previous prime is 135240229. The next prime is 135240247. The reversal of 135240241 is 142042531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111513600 + 23726641 = 10560^2 + 4871^2 .

It is a cyclic number.

It is not a de Polignac number, because 135240241 - 2²³ = 126851633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135240247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67620120 + 67620121.

It is an arithmetic number, because the mean of its divisors is an integer number (67620121).

Almost surely, 2^135240241 is an apocalyptic number.

It is an amenable number.

135240241 is a deficient number, since it is larger than the sum of its proper divisors (1).

135240241 is an equidigital number, since it uses as much as digits as its factorization.

135240241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 135240241 is about 11629.2837698630. The cubic root of 135240241 is about 513.2969046599.

Adding to 135240241 its reverse (142042531), we get a palindrome (277282772).

The spelling of 135240241 in words is "one hundred thirty-five million, two hundred forty thousand, two hundred forty-one".