42261563 has 2 divisors, whose sum is σ = 42261564. Its totient is φ = 42261562.

The previous prime is 42261559. The next prime is 42261577. The reversal of 42261563 is 36516224.

42261563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42261563 - 2² = 42261559 is a prime.

It is not a weakly prime, because it can be changed into another prime (42261533) 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, 21130781 + 21130782.

It is an arithmetic number, because the mean of its divisors is an integer number (21130782).

Almost surely, 2^42261563 is an apocalyptic number.

42261563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42261563 is an equidigital number, since it uses as much as digits as its factorization.

42261563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 42261563 is about 6500.8894006897. The cubic root of 42261563 is about 348.3227589768.

Adding to 42261563 its reverse (36516224), we get a palindrome (78777787).

It can be divided in two parts, 42261 and 563, that added together give a palindrome (42824).

The spelling of 42261563 in words is "forty-two million, two hundred sixty-one thousand, five hundred sixty-three".