133158 has 8 divisors (see below), whose sum is σ = 266328. Its totient is φ = 44384.

The previous prime is 133157. The next prime is 133169. The reversal of 133158 is 851331.

It is a happy number.

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

133158 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 133158.

It is not an unprimeable number, because it can be changed into a prime (133153) 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 3 ways as a sum of consecutive naturals, for example, 11091 + ... + 11102.

It is an arithmetic number, because the mean of its divisors is an integer number (33291).

2¹³³¹⁵⁸ is an apocalyptic number.

133158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133158 is a wasteful number, since it uses less digits than its factorization.

133158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22198.

The product of its digits is 360, while the sum is 21.

The square root of 133158 is about 364.9082076358. The cubic root of 133158 is about 51.0648924055.

Adding to 133158 its reverse (851331), we get a palindrome (984489).

The spelling of 133158 in words is "one hundred thirty-three thousand, one hundred fifty-eight".