133243143 has 24 divisors (see below), whose sum is σ = 205564800. Its totient is φ = 76499280.

The previous prime is 133243133. The next prime is 133243157. The reversal of 133243143 is 341342331.

It is not a de Polignac number, because 133243143 - 2⁹ = 133242631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133243133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2763 + ... + 16556.

It is an arithmetic number, because the mean of its divisors is an integer number (8565200).

Almost surely, 2^133243143 is an apocalyptic number.

133243143 is a deficient number, since it is larger than the sum of its proper divisors (72321657).

133243143 is a wasteful number, since it uses less digits than its factorization.

133243143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19363 (or 19352 counting only the distinct ones).

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

The square root of 133243143 is about 11543.0993671544. The cubic root of 133243143 is about 510.7577394416.

Adding to 133243143 its reverse (341342331), we get a palindrome (474585474).

It can be divided in two parts, 133243 and 143, that added together give a triangular number (133386 = T₅₁₆).

The spelling of 133243143 in words is "one hundred thirty-three million, two hundred forty-three thousand, one hundred forty-three".