41838721 has 2 divisors, whose sum is σ = 41838722. Its totient is φ = 41838720.

The previous prime is 41838707. The next prime is 41838739. The reversal of 41838721 is 12783814.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37344321 + 4494400 = 6111^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 41838721 - 2²³ = 33450113 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_2538538 and since 41838721 and 2538538 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (41838701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20919360 + 20919361.

It is an arithmetic number, because the mean of its divisors is an integer number (20919361).

Almost surely, 2^41838721 is an apocalyptic number.

It is an amenable number.

41838721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41838721 is an equidigital number, since it uses as much as digits as its factorization.

41838721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 41838721 is about 6468.2857852757. The cubic root of 41838721 is about 347.1571651137.

The spelling of 41838721 in words is "forty-one million, eight hundred thirty-eight thousand, seven hundred twenty-one".