4042456643 has 2 divisors, whose sum is σ = 4042456644. Its totient is φ = 4042456642.

The previous prime is 4042456631. The next prime is 4042456679. The reversal of 4042456643 is 3466542404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4042456643 - 2²⁸ = 3774021187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4042456597 and 4042456606.

It is not a weakly prime, because it can be changed into another prime (4042456343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021228321 + 2021228322.

It is an arithmetic number, because the mean of its divisors is an integer number (2021228322).

Almost surely, 2^4042456643 is an apocalyptic number.

4042456643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4042456643 is an equidigital number, since it uses as much as digits as its factorization.

4042456643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 38.

The square root of 4042456643 is about 63580.3164745191. The cubic root of 4042456643 is about 1592.9976074932.

The spelling of 4042456643 in words is "four billion, forty-two million, four hundred fifty-six thousand, six hundred forty-three".