40712171 has 2 divisors, whose sum is σ = 40712172. Its totient is φ = 40712170.

The previous prime is 40712159. The next prime is 40712179. The reversal of 40712171 is 17121704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40712171 - 2¹⁰ = 40711147 is a prime.

It is not a weakly prime, because it can be changed into another prime (40712179) 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, 20356085 + 20356086.

It is an arithmetic number, because the mean of its divisors is an integer number (20356086).

Almost surely, 2^40712171 is an apocalyptic number.

40712171 is a deficient number, since it is larger than the sum of its proper divisors (1).

40712171 is an equidigital number, since it uses as much as digits as its factorization.

40712171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 40712171 is about 6380.6089834749. The cubic root of 40712171 is about 344.0129203503.

Adding to 40712171 its reverse (17121704), we get a palindrome (57833875).

The spelling of 40712171 in words is "forty million, seven hundred twelve thousand, one hundred seventy-one".