42163171 has 2 divisors, whose sum is σ = 42163172. Its totient is φ = 42163170.

The previous prime is 42163151. The next prime is 42163181. The reversal of 42163171 is 17136124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42163171 - 2¹³ = 42154979 is a prime.

It is not a weakly prime, because it can be changed into another prime (42163151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21081585 + 21081586.

It is an arithmetic number, because the mean of its divisors is an integer number (21081586).

Almost surely, 2^42163171 is an apocalyptic number.

42163171 is a deficient number, since it is larger than the sum of its proper divisors (1).

42163171 is an equidigital number, since it uses as much as digits as its factorization.

42163171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 42163171 is about 6493.3174110003. The cubic root of 42163171 is about 348.0522310074.

Adding to 42163171 its reverse (17136124), we get a palindrome (59299295).

The spelling of 42163171 in words is "forty-two million, one hundred sixty-three thousand, one hundred seventy-one".