133489243 has 8 divisors (see below), whose sum is σ = 136912688. Its totient is φ = 130080384.

The previous prime is 133489201. The next prime is 133489261. The reversal of 133489243 is 342984331.

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-133489243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133489283) 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, 16255 + ... + 23047.

It is an arithmetic number, because the mean of its divisors is an integer number (17114086).

Almost surely, 2^133489243 is an apocalyptic number.

133489243 is a deficient number, since it is larger than the sum of its proper divisors (3423445).

133489243 is an equidigital number, since it uses as much as digits as its factorization.

133489243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7293.

The product of its digits is 62208, while the sum is 37.

The square root of 133489243 is about 11553.7544979976. The cubic root of 133489243 is about 511.0720024459.

The spelling of 133489243 in words is "one hundred thirty-three million, four hundred eighty-nine thousand, two hundred forty-three".