143172242971 has 6 divisors (see below), whose sum is σ = 151104223572. Its totient is φ = 135636861420.

The previous prime is 143172242957. The next prime is 143172243037. The reversal of 143172242971 is 179242271341.

143172242971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143172242971 - 2¹⁷ = 143172111899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143172242951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198299145 + ... + 198299866.

It is an arithmetic number, because the mean of its divisors is an integer number (25184037262).

Almost surely, 2^143172242971 is an apocalyptic number.

143172242971 is a deficient number, since it is larger than the sum of its proper divisors (7931980601).

143172242971 is an equidigital number, since it uses as much as digits as its factorization.

143172242971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396599049 (or 396599030 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The spelling of 143172242971 in words is "one hundred forty-three billion, one hundred seventy-two million, two hundred forty-two thousand, nine hundred seventy-one".