143440021443 has 4 divisors (see below), whose sum is σ = 191253361928. Its totient is φ = 95626680960.

The previous prime is 143440021441. The next prime is 143440021453. The reversal of 143440021443 is 344120044341.

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

It is not a de Polignac number, because 143440021443 - 2¹ = 143440021441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143440021443.

It is not an unprimeable number, because it can be changed into a prime (143440021441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23906670238 + ... + 23906670243.

It is an arithmetic number, because the mean of its divisors is an integer number (47813340482).

Almost surely, 2^143440021443 is an apocalyptic number.

143440021443 is a deficient number, since it is larger than the sum of its proper divisors (47813340485).

143440021443 is an equidigital number, since it uses as much as digits as its factorization.

143440021443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47813340484.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 143440021443 its reverse (344120044341), we get a palindrome (487560065784).

The spelling of 143440021443 in words is "one hundred forty-three billion, four hundred forty million, twenty-one thousand, four hundred forty-three".