41042581 has 2 divisors, whose sum is σ = 41042582. Its totient is φ = 41042580.

The previous prime is 41042567. The next prime is 41042591. The reversal of 41042581 is 18524014.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40640625 + 401956 = 6375^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 41042581 - 2⁹ = 41042069 is a prime.

It is a super-2 number, since 2×41042581² = 3368986910283122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41042501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20521290 + 20521291.

It is an arithmetic number, because the mean of its divisors is an integer number (20521291).

Almost surely, 2^41042581 is an apocalyptic number.

It is an amenable number.

41042581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41042581 is an equidigital number, since it uses as much as digits as its factorization.

41042581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 41042581 is about 6406.4483920500. The cubic root of 41042581 is about 344.9410555322.

Adding to 41042581 its reverse (18524014), we get a palindrome (59566595).

The spelling of 41042581 in words is "forty-one million, forty-two thousand, five hundred eighty-one".