41866021 has 2 divisors, whose sum is σ = 41866022. Its totient is φ = 41866020.

The previous prime is 41866007. The next prime is 41866067. The reversal of 41866021 is 12066814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34975396 + 6890625 = 5914^2 + 2625^2 .

It is a cyclic number.

It is not a de Polignac number, because 41866021 - 2²³ = 33477413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41866081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20933010 + 20933011.

It is an arithmetic number, because the mean of its divisors is an integer number (20933011).

Almost surely, 2^41866021 is an apocalyptic number.

It is an amenable number.

41866021 is a deficient number, since it is larger than the sum of its proper divisors (1).

41866021 is an equidigital number, since it uses as much as digits as its factorization.

41866021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 41866021 is about 6470.3957375110. The cubic root of 41866021 is about 347.2326560287.

The spelling of 41866021 in words is "forty-one million, eight hundred sixty-six thousand, twenty-one".