971042161 has 2 divisors, whose sum is σ = 971042162. Its totient is φ = 971042160.

The previous prime is 971042153. The next prime is 971042239. The reversal of 971042161 is 161240179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837755136 + 133287025 = 28944^2 + 11545^2 .

It is an emirp because it is prime and its reverse (161240179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971042161 - 2³ = 971042153 is a prime.

It is not a weakly prime, because it can be changed into another prime (971042461) 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 as a sum of consecutive naturals, namely, 485521080 + 485521081.

It is an arithmetic number, because the mean of its divisors is an integer number (485521081).

Almost surely, 2^971042161 is an apocalyptic number.

It is an amenable number.

971042161 is a deficient number, since it is larger than the sum of its proper divisors (1).

971042161 is an equidigital number, since it uses as much as digits as its factorization.

971042161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 971042161 is about 31161.5493998614. The cubic root of 971042161 is about 990.2526855591.

The spelling of 971042161 in words is "nine hundred seventy-one million, forty-two thousand, one hundred sixty-one".