42563671 has 2 divisors, whose sum is σ = 42563672. Its totient is φ = 42563670.

The previous prime is 42563581. The next prime is 42563683. The reversal of 42563671 is 17636524.

It is a happy number.

42563671 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 not a de Polignac number, because 42563671 - 2⁹ = 42563159 is a prime.

It is a super-3 number, since 3×42563671³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42563471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21281835 + 21281836.

It is an arithmetic number, because the mean of its divisors is an integer number (21281836).

Almost surely, 2^42563671 is an apocalyptic number.

42563671 is a deficient number, since it is larger than the sum of its proper divisors (1).

42563671 is an equidigital number, since it uses as much as digits as its factorization.

42563671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 42563671 is about 6524.0839203677. The cubic root of 42563671 is about 349.1507874623.

It can be divided in two parts, 42563 and 671, that added together give a palindrome (43234).

The spelling of 42563671 in words is "forty-two million, five hundred sixty-three thousand, six hundred seventy-one".