43042171 has 2 divisors, whose sum is σ = 43042172. Its totient is φ = 43042170.

The previous prime is 43042159. The next prime is 43042189. The reversal of 43042171 is 17124034.

43042171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43042171 - 2¹⁵ = 43009403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43042471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21521085 + 21521086.

It is an arithmetic number, because the mean of its divisors is an integer number (21521086).

Almost surely, 2^43042171 is an apocalyptic number.

43042171 is a deficient number, since it is larger than the sum of its proper divisors (1).

43042171 is an equidigital number, since it uses as much as digits as its factorization.

43042171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 43042171 is about 6560.6532449140. The cubic root of 43042171 is about 350.4542971457.

The spelling of 43042171 in words is "forty-three million, forty-two thousand, one hundred seventy-one".