135135241 has 4 divisors (see below), whose sum is σ = 135259972. Its totient is φ = 135010512.

The previous prime is 135135233. The next prime is 135135251. The reversal of 135135241 is 142531531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77070841 + 58064400 = 8779^2 + 7620^2 .

It is a cyclic number.

It is not a de Polignac number, because 135135241 - 2³ = 135135233 is a prime.

It is a super-3 number, since 3×135135241³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135135251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60726 + ... + 62911.

It is an arithmetic number, because the mean of its divisors is an integer number (33814993).

Almost surely, 2^135135241 is an apocalyptic number.

It is an amenable number.

135135241 is a deficient number, since it is larger than the sum of its proper divisors (124731).

135135241 is a wasteful number, since it uses less digits than its factorization.

135135241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124730.

The product of its digits is 1800, while the sum is 25.

The square root of 135135241 is about 11624.7684278010. The cubic root of 135135241 is about 513.1640296890.

Adding to 135135241 its reverse (142531531), we get a palindrome (277666772).

The spelling of 135135241 in words is "one hundred thirty-five million, one hundred thirty-five thousand, two hundred forty-one".