42175271 has 2 divisors, whose sum is σ = 42175272. Its totient is φ = 42175270.

The previous prime is 42175267. The next prime is 42175327. The reversal of 42175271 is 17257124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42175271 - 2² = 42175267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42175201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21087635 + 21087636.

It is an arithmetic number, because the mean of its divisors is an integer number (21087636).

Almost surely, 2^42175271 is an apocalyptic number.

42175271 is a deficient number, since it is larger than the sum of its proper divisors (1).

42175271 is an equidigital number, since it uses as much as digits as its factorization.

42175271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 29.

The square root of 42175271 is about 6494.2490712938. The cubic root of 42175271 is about 348.0855225356.

The spelling of 42175271 in words is "forty-two million, one hundred seventy-five thousand, two hundred seventy-one".