41881921 has 2 divisors, whose sum is σ = 41881922. Its totient is φ = 41881920.

The previous prime is 41881877. The next prime is 41881927. The reversal of 41881921 is 12918814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 408321 = 6440^2 + 639^2 .

It is a cyclic number.

It is not a de Polignac number, because 41881921 - 2⁷ = 41881793 is a prime.

It is not a weakly prime, because it can be changed into another prime (41881927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20940960 + 20940961.

It is an arithmetic number, because the mean of its divisors is an integer number (20940961).

Almost surely, 2^41881921 is an apocalyptic number.

It is an amenable number.

41881921 is a deficient number, since it is larger than the sum of its proper divisors (1).

41881921 is an equidigital number, since it uses as much as digits as its factorization.

41881921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 34.

The square root of 41881921 is about 6471.6242937921. The cubic root of 41881921 is about 347.2766081433.

The spelling of 41881921 in words is "forty-one million, eight hundred eighty-one thousand, nine hundred twenty-one".