135745 has 8 divisors (see below), whose sum is σ = 172584. Its totient is φ = 102144.

The previous prime is 135743. The next prime is 135757. The reversal of 135745 is 547531.

It can be written as a sum of positive squares in 4 ways, for example, as 12544 + 123201 = 112^2 + 351^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135745 - 2¹ = 135743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714 + ... + 883.

It is an arithmetic number, because the mean of its divisors is an integer number (21573).

2¹³⁵⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

135745 is a deficient number, since it is larger than the sum of its proper divisors (36839).

135745 is a wasteful number, since it uses less digits than its factorization.

135745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619.

The product of its digits is 2100, while the sum is 25.

The square root of 135745 is about 368.4358831602. The cubic root of 135745 is about 51.3934706842.

The spelling of 135745 in words is "one hundred thirty-five thousand, seven hundred forty-five".