133900 has 36 divisors (see below), whose sum is σ = 315952. Its totient is φ = 48960.

The previous prime is 133877. The next prime is 133919. The reversal of 133900 is 9331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

133900 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1249 + ... + 1351.

2¹³³⁹⁰⁰ is an apocalyptic number.

133900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157976).

133900 is an abundant number, since it is smaller than the sum of its proper divisors (182052).

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

133900 is a wasteful number, since it uses less digits than its factorization.

133900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 123 counting only the distinct ones).

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

The square root of 133900 is about 365.9234892706. The cubic root of 133900 is about 51.1595668736.

The spelling of 133900 in words is "one hundred thirty-three thousand, nine hundred".