42444163 has 2 divisors, whose sum is σ = 42444164. Its totient is φ = 42444162.

The previous prime is 42444161. The next prime is 42444191. The reversal of 42444163 is 36144424.

It is an a-pointer prime, because the next prime (42444191) can be obtained adding 42444163 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42444163 - 2¹ = 42444161 is a prime.

Together with 42444161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42444161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222081 + 21222082.

It is an arithmetic number, because the mean of its divisors is an integer number (21222082).

Almost surely, 2^42444163 is an apocalyptic number.

42444163 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444163 is an equidigital number, since it uses as much as digits as its factorization.

42444163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 42444163 is about 6514.9184952691. The cubic root of 42444163 is about 348.8237055114.

Adding to 42444163 its reverse (36144424), we get a palindrome (78588587).

The spelling of 42444163 in words is "forty-two million, four hundred forty-four thousand, one hundred sixty-three".