133975 has 12 divisors (see below), whose sum is σ = 174096. Its totient is φ = 102080.

The previous prime is 133967. The next prime is 133979. The reversal of 133975 is 579331.

133975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 133975 - 2³ = 133967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459 + ... + 691.

It is an arithmetic number, because the mean of its divisors is an integer number (14508).

2¹³³⁹⁷⁵ is an apocalyptic number.

133975 is a deficient number, since it is larger than the sum of its proper divisors (40121).

133975 is a wasteful number, since it uses less digits than its factorization.

133975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 261 counting only the distinct ones).

The product of its digits is 2835, while the sum is 28.

The square root of 133975 is about 366.0259553638. The cubic root of 133975 is about 51.1691169143.

The spelling of 133975 in words is "one hundred thirty-three thousand, nine hundred seventy-five".