133333943 has 4 divisors (see below), whose sum is σ = 134293320. Its totient is φ = 132374568.

The previous prime is 133333933. The next prime is 133333957. The reversal of 133333943 is 349333331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349333331 = 149 ⋅2344519.

It is a cyclic number.

It is not a de Polignac number, because 133333943 - 2¹⁴ = 133317559 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 (133333933) 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 3 ways as a sum of consecutive naturals, for example, 479480 + ... + 479757.

It is an arithmetic number, because the mean of its divisors is an integer number (33573330).

Almost surely, 2^133333943 is an apocalyptic number.

133333943 is a deficient number, since it is larger than the sum of its proper divisors (959377).

133333943 is an equidigital number, since it uses as much as digits as its factorization.

133333943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959376.

The product of its digits is 26244, while the sum is 32.

The square root of 133333943 is about 11547.0317831034. The cubic root of 133333943 is about 510.8737335834.

The spelling of 133333943 in words is "one hundred thirty-three million, three hundred thirty-three thousand, nine hundred forty-three".