4240442941081 has 2 divisors, whose sum is σ = 4240442941082. Its totient is φ = 4240442941080.

The previous prime is 4240442941079. The next prime is 4240442941099. The reversal of 4240442941081 is 1801492440424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4230179427600 + 10263513481 = 2056740^2 + 101309^2 .

It is a cyclic number.

It is not a de Polignac number, because 4240442941081 - 2¹ = 4240442941079 is a prime.

It is a super-2 number, since 2×4240442941081² (a number of 26 digits) contains 22 as substring.

Together with 4240442941079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4240442941981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120221470540 + 2120221470541.

It is an arithmetic number, because the mean of its divisors is an integer number (2120221470541).

Almost surely, 2^{4240442941081} is an apocalyptic number.

It is an amenable number.

4240442941081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4240442941081 is an equidigital number, since it uses as much as digits as its factorization.

4240442941081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 4240442941081 in words is "four trillion, two hundred forty billion, four hundred forty-two million, nine hundred forty-one thousand, eighty-one".