40424141 has 2 divisors, whose sum is σ = 40424142. Its totient is φ = 40424140.

The previous prime is 40424129. The next prime is 40424149. The reversal of 40424141 is 14142404.

It is a happy number.

40424141 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 can be written as a sum of positive squares in only one way, i.e., 20666116 + 19758025 = 4546^2 + 4445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40424141 is a prime.

It is a super-2 number, since 2×40424141² = 3268222351175762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40424149) 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, 20212070 + 20212071.

It is an arithmetic number, because the mean of its divisors is an integer number (20212071).

Almost surely, 2^40424141 is an apocalyptic number.

It is an amenable number.

40424141 is a deficient number, since it is larger than the sum of its proper divisors (1).

40424141 is an equidigital number, since it uses as much as digits as its factorization.

40424141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 40424141 is about 6357.9981912549. The cubic root of 40424141 is about 343.1997267138.

Adding to 40424141 its reverse (14142404), we get a palindrome (54566545).

The spelling of 40424141 in words is "forty million, four hundred twenty-four thousand, one hundred forty-one".