41247821 has 2 divisors, whose sum is σ = 41247822. Its totient is φ = 41247820.

The previous prime is 41247769. The next prime is 41247853. The reversal of 41247821 is 12874214.

41247821 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., 33062500 + 8185321 = 5750^2 + 2861^2 .

It is a cyclic number.

It is not a de Polignac number, because 41247821 - 2²² = 37053517 is a prime.

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 (41247881) 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, 20623910 + 20623911.

It is an arithmetic number, because the mean of its divisors is an integer number (20623911).

Almost surely, 2^41247821 is an apocalyptic number.

It is an amenable number.

41247821 is a deficient number, since it is larger than the sum of its proper divisors (1).

41247821 is an equidigital number, since it uses as much as digits as its factorization.

41247821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 29.

The square root of 41247821 is about 6422.4466521724. The cubic root of 41247821 is about 345.5150774289.

The spelling of 41247821 in words is "forty-one million, two hundred forty-seven thousand, eight hundred twenty-one".