133326243 has 20 divisors (see below), whose sum is σ = 200521200. Its totient is φ = 88279632.

The previous prime is 133326241. The next prime is 133326289. The reversal of 133326243 is 342623331.

It is a happy number.

133326243 is a `hidden beast` number, since 1 + 3 + 3 + 32 + 624 + 3 = 666.

It is not a de Polignac number, because 133326243 - 2¹ = 133326241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133326241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6546 + ... + 17592.

It is an arithmetic number, because the mean of its divisors is an integer number (10026060).

Almost surely, 2^133326243 is an apocalyptic number.

133326243 is a deficient number, since it is larger than the sum of its proper divisors (67194957).

133326243 is a wasteful number, since it uses less digits than its factorization.

133326243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11208 (or 11199 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

The square root of 133326243 is about 11546.6983592714. The cubic root of 133326243 is about 510.8638991197.

Adding to 133326243 its reverse (342623331), we get a palindrome (475949574).

The spelling of 133326243 in words is "one hundred thirty-three million, three hundred twenty-six thousand, two hundred forty-three".