42120563 has 2 divisors, whose sum is σ = 42120564. Its totient is φ = 42120562.

The previous prime is 42120523. The next prime is 42120569. The reversal of 42120563 is 36502124.

42120563 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 42120563 - 2²⁴ = 25343347 is a prime.

It is not a weakly prime, because it can be changed into another prime (42120569) 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, 21060281 + 21060282.

It is an arithmetic number, because the mean of its divisors is an integer number (21060282).

Almost surely, 2^42120563 is an apocalyptic number.

42120563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120563 is an equidigital number, since it uses as much as digits as its factorization.

42120563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 42120563 is about 6490.0356701639. The cubic root of 42120563 is about 347.9349500776.

Adding to 42120563 its reverse (36502124), we get a palindrome (78622687).

The spelling of 42120563 in words is "forty-two million, one hundred twenty thousand, five hundred sixty-three".