42565441003 has 2 divisors, whose sum is σ = 42565441004. Its totient is φ = 42565441002.

The previous prime is 42565441001. The next prime is 42565441057. The reversal of 42565441003 is 30014456524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42565441003 - 2¹ = 42565441001 is a prime.

Together with 42565441001, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42565441003.

It is not a weakly prime, because it can be changed into another prime (42565441001) 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, 21282720501 + 21282720502.

It is an arithmetic number, because the mean of its divisors is an integer number (21282720502).

Almost surely, 2^42565441003 is an apocalyptic number.

42565441003 is a deficient number, since it is larger than the sum of its proper divisors (1).

42565441003 is an equidigital number, since it uses as much as digits as its factorization.

42565441003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 42565441003 its reverse (30014456524), we get a palindrome (72579897527).

The spelling of 42565441003 in words is "forty-two billion, five hundred sixty-five million, four hundred forty-one thousand, three".