135748241 has 4 divisors (see below), whose sum is σ = 137973684. Its totient is φ = 133522800.

The previous prime is 135748219. The next prime is 135748259. The reversal of 135748241 is 142847531.

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 36048016 + 99700225 = 6004^2 + 9985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135748241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135748201) 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, 1112630 + ... + 1112751.

It is an arithmetic number, because the mean of its divisors is an integer number (34493421).

Almost surely, 2^135748241 is an apocalyptic number.

It is an amenable number.

135748241 is a deficient number, since it is larger than the sum of its proper divisors (2225443).

135748241 is an equidigital number, since it uses as much as digits as its factorization.

135748241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225442.

The product of its digits is 26880, while the sum is 35.

The square root of 135748241 is about 11651.1047115713. The cubic root of 135748241 is about 513.9387969843.

The spelling of 135748241 in words is "one hundred thirty-five million, seven hundred forty-eight thousand, two hundred forty-one".