135073 has 4 divisors (see below), whose sum is σ = 135828. Its totient is φ = 134320.

The previous prime is 135059. The next prime is 135077. The reversal of 135073 is 370531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 91809 + 43264 = 303^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 135073 - 2¹⁷ = 4001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135073.

It is not an unprimeable number, because it can be changed into a prime (135077) 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, 63 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (33957).

2¹³⁵⁰⁷³ is an apocalyptic number.

It is an amenable number.

135073 is a deficient number, since it is larger than the sum of its proper divisors (755).

135073 is an equidigital number, since it uses as much as digits as its factorization.

135073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 135073 is about 367.5227884091. The cubic root of 135073 is about 51.3085232707.

The spelling of 135073 in words is "one hundred thirty-five thousand, seventy-three".