41205641 has 2 divisors, whose sum is σ = 41205642. Its totient is φ = 41205640.

The previous prime is 41205629. The next prime is 41205643. The reversal of 41205641 is 14650214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31595641 + 9610000 = 5621^2 + 3100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41205641 is a prime.

It is a Sophie Germain prime.

Together with 41205643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (41205643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20602820 + 20602821.

It is an arithmetic number, because the mean of its divisors is an integer number (20602821).

Almost surely, 2^41205641 is an apocalyptic number.

It is an amenable number.

41205641 is a deficient number, since it is larger than the sum of its proper divisors (1).

41205641 is an equidigital number, since it uses as much as digits as its factorization.

41205641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 41205641 is about 6419.1620169614. The cubic root of 41205641 is about 345.3972627487.

Adding to 41205641 its reverse (14650214), we get a palindrome (55855855).

The spelling of 41205641 in words is "forty-one million, two hundred five thousand, six hundred forty-one".