41243681 has 4 divisors (see below), whose sum is σ = 41264532. Its totient is φ = 41222832.

The previous prime is 41243677. The next prime is 41243689. The reversal of 41243681 is 18634214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19936225 + 21307456 = 4465^2 + 4616^2 .

It is a cyclic number.

It is not a de Polignac number, because 41243681 - 2² = 41243677 is a prime.

It is a super-2 number, since 2×41243681² = 3402082444859522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41243689) 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 in 3 ways as a sum of consecutive naturals, for example, 7106 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (10316133).

Almost surely, 2^41243681 is an apocalyptic number.

It is an amenable number.

41243681 is a deficient number, since it is larger than the sum of its proper divisors (20851).

41243681 is a wasteful number, since it uses less digits than its factorization.

41243681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20850.

The product of its digits is 4608, while the sum is 29.

The square root of 41243681 is about 6422.1243370087. The cubic root of 41243681 is about 345.5035173816.

Adding to 41243681 its reverse (18634214), we get a palindrome (59877895).

The spelling of 41243681 in words is "forty-one million, two hundred forty-three thousand, six hundred eighty-one".