42907171 has 2 divisors, whose sum is σ = 42907172. Its totient is φ = 42907170.

The previous prime is 42907141. The next prime is 42907229. The reversal of 42907171 is 17170924.

42907171 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 42907171 - 2¹⁹ = 42382883 is a prime.

It is not a weakly prime, because it can be changed into another prime (42907141) 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, 21453585 + 21453586.

It is an arithmetic number, because the mean of its divisors is an integer number (21453586).

Almost surely, 2^42907171 is an apocalyptic number.

42907171 is a deficient number, since it is larger than the sum of its proper divisors (1).

42907171 is an equidigital number, since it uses as much as digits as its factorization.

42907171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 42907171 is about 6550.3565551808. The cubic root of 42907171 is about 350.0875182501.

The spelling of 42907171 in words is "forty-two million, nine hundred seven thousand, one hundred seventy-one".