41040781 has 2 divisors, whose sum is σ = 41040782. Its totient is φ = 41040780.

The previous prime is 41040767. The next prime is 41040821. The reversal of 41040781 is 18704014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39576681 + 1464100 = 6291^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 41040781 - 2⁵ = 41040749 is a prime.

It is a super-2 number, since 2×41040781² = 3368691410179922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41040721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20520390 + 20520391.

It is an arithmetic number, because the mean of its divisors is an integer number (20520391).

Almost surely, 2^41040781 is an apocalyptic number.

It is an amenable number.

41040781 is a deficient number, since it is larger than the sum of its proper divisors (1).

41040781 is an equidigital number, since it uses as much as digits as its factorization.

41040781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 41040781 is about 6406.3079070554. The cubic root of 41040781 is about 344.9360127777.

Adding to 41040781 its reverse (18704014), we get a palindrome (59744795).

The spelling of 41040781 in words is "forty-one million, forty thousand, seven hundred eighty-one".