135257241 has 8 divisors (see below), whose sum is σ = 206106304. Its totient is φ = 77289840.

The previous prime is 135257207. The next prime is 135257251. The reversal of 135257241 is 142752531.

135257241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135257241 - 2¹⁰ = 135256217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135257199 and 135257208.

It is not an unprimeable number, because it can be changed into a prime (135257251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220390 + ... + 3220431.

It is an arithmetic number, because the mean of its divisors is an integer number (25763288).

Almost surely, 2^135257241 is an apocalyptic number.

It is an amenable number.

135257241 is a deficient number, since it is larger than the sum of its proper divisors (70849063).

135257241 is an equidigital number, since it uses as much as digits as its factorization.

135257241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440831.

The product of its digits is 8400, while the sum is 30.

The square root of 135257241 is about 11630.0146603519. The cubic root of 135257241 is about 513.3184112808.

The spelling of 135257241 in words is "one hundred thirty-five million, two hundred fifty-seven thousand, two hundred forty-one".