133340 has 24 divisors (see below), whose sum is σ = 287280. Its totient is φ = 51968.

The previous prime is 133337. The next prime is 133349. The reversal of 133340 is 43331.

It is a happy number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (11970).

2¹³³³⁴⁰ is an apocalyptic number.

133340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133340 is an abundant number, since it is smaller than the sum of its proper divisors (153940).

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

133340 is a wasteful number, since it uses less digits than its factorization.

133340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 133340 is about 365.1575002653. The cubic root of 133340 is about 51.0881469336.

Adding to 133340 its reverse (43331), we get a palindrome (176671).

Subtracting from 133340 its reverse (43331), we obtain a palindrome (90009).

The spelling of 133340 in words is "one hundred thirty-three thousand, three hundred forty".