135201241 has 18 divisors (see below), whose sum is σ = 159417258. Its totient is φ = 114327360.

The previous prime is 135201239. The next prime is 135201271. The reversal of 135201241 is 142102531.

It can be written as a sum of positive squares in only one way, i.e., 126225225 + 8976016 = 11235^2 + 2996^2 .

It is not a de Polignac number, because 135201241 - 2¹ = 135201239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 560881 + ... + 561121.

Almost surely, 2^135201241 is an apocalyptic number.

It is an amenable number.

135201241 is a deficient number, since it is larger than the sum of its proper divisors (24216017).

135201241 is an equidigital number, since it uses as much as digits as its factorization.

135201241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 135201241 is about 11627.6068474988. The cubic root of 135201241 is about 513.2475591305.

Adding to 135201241 its reverse (142102531), we get a palindrome (277303772).

The spelling of 135201241 in words is "one hundred thirty-five million, two hundred one thousand, two hundred forty-one".