133243543 has 8 divisors (see below), whose sum is σ = 137430720. Its totient is φ = 129112800.

The previous prime is 133243493. The next prime is 133243547. The reversal of 133243543 is 345342331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133243543 - 2¹⁷ = 133112471 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 (133243547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9288 + ... + 18781.

It is an arithmetic number, because the mean of its divisors is an integer number (17178840).

Almost surely, 2^133243543 is an apocalyptic number.

133243543 is a deficient number, since it is larger than the sum of its proper divisors (4187177).

133243543 is a wasteful number, since it uses less digits than its factorization.

133243543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28217.

The product of its digits is 12960, while the sum is 28.

The square root of 133243543 is about 11543.1166935105. The cubic root of 133243543 is about 510.7582505445.

Adding to 133243543 its reverse (345342331), we get a palindrome (478585874).

The spelling of 133243543 in words is "one hundred thirty-three million, two hundred forty-three thousand, five hundred forty-three".