40421471 has 2 divisors, whose sum is σ = 40421472. Its totient is φ = 40421470.

The previous prime is 40421453. The next prime is 40421483. The reversal of 40421471 is 17412404.

It is a happy number.

40421471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40421471 is a prime.

It is a super-3 number, since 3×40421471³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40421411) 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, 20210735 + 20210736.

It is an arithmetic number, because the mean of its divisors is an integer number (20210736).

Almost surely, 2^40421471 is an apocalyptic number.

40421471 is a deficient number, since it is larger than the sum of its proper divisors (1).

40421471 is an equidigital number, since it uses as much as digits as its factorization.

40421471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 40421471 is about 6357.7882160387. The cubic root of 40421471 is about 343.1921704745.

Adding to 40421471 its reverse (17412404), we get a palindrome (57833875).

The spelling of 40421471 in words is "forty million, four hundred twenty-one thousand, four hundred seventy-one".