12143533 has 4 divisors (see below), whose sum is σ = 12263868. Its totient is φ = 12023200.

The previous prime is 12143513. The next prime is 12143561. The reversal of 12143533 is 33534121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7469289 + 4674244 = 2733^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 12143533 - 2¹⁷ = 12012461 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 (12143513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60016 + ... + 60217.

It is an arithmetic number, because the mean of its divisors is an integer number (3065967).

Almost surely, 2^12143533 is an apocalyptic number.

It is an amenable number.

12143533 is a deficient number, since it is larger than the sum of its proper divisors (120335).

12143533 is a wasteful number, since it uses less digits than its factorization.

12143533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120334.

The product of its digits is 1080, while the sum is 22.

The square root of 12143533 is about 3484.7572368818. The cubic root of 12143533 is about 229.8520346349.

Adding to 12143533 its reverse (33534121), we get a palindrome (45677654).

The spelling of 12143533 in words is "twelve million, one hundred forty-three thousand, five hundred thirty-three".