40412171 has 2 divisors, whose sum is σ = 40412172. Its totient is φ = 40412170.

The previous prime is 40412149. The next prime is 40412191. The reversal of 40412171 is 17121404.

It is an a-pointer prime, because the next prime (40412191) can be obtained adding 40412171 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40412171 - 2¹⁴ = 40395787 is a prime.

It is not a weakly prime, because it can be changed into another prime (40412191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20206085 + 20206086.

It is an arithmetic number, because the mean of its divisors is an integer number (20206086).

Almost surely, 2^40412171 is an apocalyptic number.

40412171 is a deficient number, since it is larger than the sum of its proper divisors (1).

40412171 is an equidigital number, since it uses as much as digits as its factorization.

40412171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 40412171 is about 6357.0567875393. The cubic root of 40412171 is about 343.1658483911.

Adding to 40412171 its reverse (17121404), we get a palindrome (57533575).

The spelling of 40412171 in words is "forty million, four hundred twelve thousand, one hundred seventy-one".