42440884471 has 2 divisors, whose sum is σ = 42440884472. Its totient is φ = 42440884470.

The previous prime is 42440884441. The next prime is 42440884487. The reversal of 42440884471 is 17448804424.

It is a happy number.

42440884471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42440884471 is a prime.

It is a super-3 number, since 3×42440884471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42440884441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220442235 + 21220442236.

It is an arithmetic number, because the mean of its divisors is an integer number (21220442236).

Almost surely, 2^42440884471 is an apocalyptic number.

42440884471 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440884471 is an equidigital number, since it uses as much as digits as its factorization.

42440884471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 917504, while the sum is 46.

The spelling of 42440884471 in words is "forty-two billion, four hundred forty million, eight hundred eighty-four thousand, four hundred seventy-one".