971442943 has 2 divisors, whose sum is σ = 971442944. Its totient is φ = 971442942.

The previous prime is 971442931. The next prime is 971442949. The reversal of 971442943 is 349244179.

It is a strong prime.

It is an emirp because it is prime and its reverse (349244179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971442943 - 2⁵ = 971442911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 971442943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971442949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485721471 + 485721472.

It is an arithmetic number, because the mean of its divisors is an integer number (485721472).

Almost surely, 2^971442943 is an apocalyptic number.

971442943 is a deficient number, since it is larger than the sum of its proper divisors (1).

971442943 is an equidigital number, since it uses as much as digits as its factorization.

971442943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 971442943 is about 31167.9794500702. The cubic root of 971442943 is about 990.3889037650.

It can be divided in two parts, 971442 and 943, that multiplied together give a triangular number (916069806 = T₄₂₈₀₃).

The spelling of 971442943 in words is "nine hundred seventy-one million, four hundred forty-two thousand, nine hundred forty-three".