135240011 has 4 divisors (see below), whose sum is σ = 139602624. Its totient is φ = 130877400.

The previous prime is 135239983. The next prime is 135240013. The reversal of 135240011 is 110042531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135240011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135240013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181260 + ... + 2181321.

It is an arithmetic number, because the mean of its divisors is an integer number (34900656).

Almost surely, 2^135240011 is an apocalyptic number.

135240011 is a deficient number, since it is larger than the sum of its proper divisors (4362613).

135240011 is an equidigital number, since it uses as much as digits as its factorization.

135240011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362612.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 135240011 is about 11629.2738810297. The cubic root of 135240011 is about 513.2966136756.

Adding to 135240011 its reverse (110042531), we get a palindrome (245282542).

The spelling of 135240011 in words is "one hundred thirty-five million, two hundred forty thousand, eleven".