133123443 has 12 divisors (see below), whose sum is σ = 187333128. Its totient is φ = 84077280.

The previous prime is 133123429. The next prime is 133123531. The reversal of 133123443 is 344321331.

It is not a de Polignac number, because 133123443 - 2⁹ = 133122931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133123343) 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 11 ways as a sum of consecutive naturals, for example, 60378 + ... + 62543.

It is an arithmetic number, because the mean of its divisors is an integer number (15611094).

Almost surely, 2^133123443 is an apocalyptic number.

133123443 is a deficient number, since it is larger than the sum of its proper divisors (54209685).

133123443 is a wasteful number, since it uses less digits than its factorization.

133123443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122962 (or 122943 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 133123443 is about 11537.9132862056. The cubic root of 133123443 is about 510.6047459066.

Adding to 133123443 its reverse (344321331), we get a palindrome (477444774).

The spelling of 133123443 in words is "one hundred thirty-three million, one hundred twenty-three thousand, four hundred forty-three".