143221443 has 8 divisors (see below), whose sum is σ = 191018688. Its totient is φ = 95452584.

The previous prime is 143221369. The next prime is 143221451. The reversal of 143221443 is 344122341.

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

It is not a de Polignac number, because 143221443 - 2¹³ = 143213251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143221493) 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 7 ways as a sum of consecutive naturals, for example, 12096 + ... + 20802.

It is an arithmetic number, because the mean of its divisors is an integer number (23877336).

Almost surely, 2^143221443 is an apocalyptic number.

143221443 is a deficient number, since it is larger than the sum of its proper divisors (47797245).

143221443 is an equidigital number, since it uses as much as digits as its factorization.

143221443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14193.

The product of its digits is 2304, while the sum is 24.

The square root of 143221443 is about 11967.5161583346. The cubic root of 143221443 is about 523.2019432507.

Adding to 143221443 its reverse (344122341), we get a palindrome (487343784).

The spelling of 143221443 in words is "one hundred forty-three million, two hundred twenty-one thousand, four hundred forty-three".