133403243 has 8 divisors (see below), whose sum is σ = 142441728. Its totient is φ = 124634664.

The previous prime is 133403201. The next prime is 133403251. The reversal of 133403243 is 342304331.

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

It is a cyclic number.

It is not a de Polignac number, because 133403243 - 2²² = 129208939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133403293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66455 + ... + 68432.

It is an arithmetic number, because the mean of its divisors is an integer number (17805216).

Almost surely, 2^133403243 is an apocalyptic number.

133403243 is a deficient number, since it is larger than the sum of its proper divisors (9038485).

133403243 is a wasteful number, since it uses less digits than its factorization.

133403243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134953.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 133403243 is about 11550.0321644574. The cubic root of 133403243 is about 510.9622267234.

Adding to 133403243 its reverse (342304331), we get a palindrome (475707574).

The spelling of 133403243 in words is "one hundred thirty-three million, four hundred three thousand, two hundred forty-three".