133424243 has 8 divisors (see below), whose sum is σ = 136351488. Its totient is φ = 130528584.

The previous prime is 133424237. The next prime is 133424281. The reversal of 133424243 is 342424331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133424243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133424843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746 + ... + 16352.

It is an arithmetic number, because the mean of its divisors is an integer number (17043936).

Almost surely, 2^133424243 is an apocalyptic number.

133424243 is a deficient number, since it is larger than the sum of its proper divisors (2927245).

133424243 is a wasteful number, since it uses less digits than its factorization.

133424243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15793.

The product of its digits is 6912, while the sum is 26.

The square root of 133424243 is about 11550.9412170611. The cubic root of 133424243 is about 510.9890367757.

Adding to 133424243 its reverse (342424331), we get a palindrome (475848574).

The spelling of 133424243 in words is "one hundred thirty-three million, four hundred twenty-four thousand, two hundred forty-three".