133418 has 8 divisors (see below), whose sum is σ = 210720. Its totient is φ = 63180.

The previous prime is 133417. The next prime is 133439. The reversal of 133418 is 814331.

It is a happy number.

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

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 133418.

It is not an unprimeable number, because it can be changed into a prime (133417) 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, 1718 + ... + 1793.

It is an arithmetic number, because the mean of its divisors is an integer number (26340).

2¹³³⁴¹⁸ is an apocalyptic number.

133418 is a deficient number, since it is larger than the sum of its proper divisors (77302).

133418 is a wasteful number, since it uses less digits than its factorization.

133418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532.

The product of its digits is 288, while the sum is 20.

The square root of 133418 is about 365.2642878793. The cubic root of 133418 is about 51.0981066824.

Adding to 133418 its reverse (814331), we get a palindrome (947749).

The spelling of 133418 in words is "one hundred thirty-three thousand, four hundred eighteen".