133090 has 8 divisors (see below), whose sum is σ = 239580. Its totient is φ = 53232.

The previous prime is 133087. The next prime is 133097. The reversal of 133090 is 90331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110889 + 22201 = 333^2 + 149^2 .

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

It is not an unprimeable number, because it can be changed into a prime (133097) 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, 6645 + ... + 6664.

2¹³³⁰⁹⁰ is an apocalyptic number.

133090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133090 is a deficient number, since it is larger than the sum of its proper divisors (106490).

133090 is a wasteful number, since it uses less digits than its factorization.

133090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13316.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 133090 is about 364.8150216205. The cubic root of 133090 is about 51.0561984631.

The spelling of 133090 in words is "one hundred thirty-three thousand, ninety".