143232401 has 12 divisors (see below), whose sum is σ = 155817180. Its totient is φ = 131601600.

The previous prime is 143232379. The next prime is 143232403. The reversal of 143232401 is 104232341.

It can be written as a sum of positive squares in 6 ways, for example, as 4558225 + 138674176 = 2135^2 + 11776^2 .

It is a de Polignac number, because none of the positive numbers 2^k-143232401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143232403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36851 + ... + 40551.

It is an arithmetic number, because the mean of its divisors is an integer number (12984765).

Almost surely, 2^143232401 is an apocalyptic number.

It is an amenable number.

143232401 is a deficient number, since it is larger than the sum of its proper divisors (12584779).

143232401 is a wasteful number, since it uses less digits than its factorization.

143232401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956 (or 3943 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 143232401 is about 11967.9739722311. The cubic root of 143232401 is about 523.2152864591.

Adding to 143232401 its reverse (104232341), we get a palindrome (247464742).

It can be divided in two parts, 1432 and 32401, that added together give a palindrome (33833).

The spelling of 143232401 in words is "one hundred forty-three million, two hundred thirty-two thousand, four hundred one".