135171241 has 4 divisors (see below), whose sum is σ = 135603412. Its totient is φ = 134739072.

The previous prime is 135171221. The next prime is 135171251. The reversal of 135171241 is 142171531.

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 64963600 + 70207641 = 8060^2 + 8379^2 .

It is a cyclic number.

It is not a de Polignac number, because 135171241 - 2⁵ = 135171209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135171221) 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 3 ways as a sum of consecutive naturals, for example, 215616 + ... + 216241.

It is an arithmetic number, because the mean of its divisors is an integer number (33900853).

Almost surely, 2^135171241 is an apocalyptic number.

It is an amenable number.

135171241 is a deficient number, since it is larger than the sum of its proper divisors (432171).

135171241 is an equidigital number, since it uses as much as digits as its factorization.

135171241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432170.

The product of its digits is 840, while the sum is 25.

The square root of 135171241 is about 11626.3167426318. The cubic root of 135171241 is about 513.2095945732.

The spelling of 135171241 in words is "one hundred thirty-five million, one hundred seventy-one thousand, two hundred forty-one".