133442303 has 4 divisors (see below), whose sum is σ = 133473648. Its totient is φ = 133410960.

The previous prime is 133442293. The next prime is 133442327. The reversal of 133442303 is 303244331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133442303 - 2⁸ = 133442047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133448303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8051 + ... + 18212.

It is an arithmetic number, because the mean of its divisors is an integer number (33368412).

Almost surely, 2^133442303 is an apocalyptic number.

133442303 is a deficient number, since it is larger than the sum of its proper divisors (31345).

133442303 is an equidigital number, since it uses as much as digits as its factorization.

133442303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31344.

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

The square root of 133442303 is about 11551.7229450849. The cubic root of 133442303 is about 511.0120911709.

Adding to 133442303 its reverse (303244331), we get a palindrome (436686634).

The spelling of 133442303 in words is "one hundred thirty-three million, four hundred forty-two thousand, three hundred three".