133158443 has 6 divisors (see below), whose sum is σ = 146364372. Its totient is φ = 121053020.

The previous prime is 133158437. The next prime is 133158481. The reversal of 133158443 is 344851331.

It is not a de Polignac number, because 133158443 - 2⁸ = 133158187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133658443) 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 5 ways as a sum of consecutive naturals, for example, 550121 + ... + 550362.

It is an arithmetic number, because the mean of its divisors is an integer number (24394062).

Almost surely, 2^133158443 is an apocalyptic number.

133158443 is a deficient number, since it is larger than the sum of its proper divisors (13205929).

133158443 is a wasteful number, since it uses less digits than its factorization.

133158443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100505 (or 1100494 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 133158443 is about 11539.4299252606. The cubic root of 133158443 is about 510.6494903426.

The spelling of 133158443 in words is "one hundred thirty-three million, one hundred fifty-eight thousand, four hundred forty-three".