42126563 has 2 divisors, whose sum is σ = 42126564. Its totient is φ = 42126562.

The previous prime is 42126533. The next prime is 42126569. The reversal of 42126563 is 36562124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42126563 - 2⁶ = 42126499 is a prime.

It is not a weakly prime, because it can be changed into another prime (42126569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21063281 + 21063282.

It is an arithmetic number, because the mean of its divisors is an integer number (21063282).

Almost surely, 2^42126563 is an apocalyptic number.

42126563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42126563 is an equidigital number, since it uses as much as digits as its factorization.

42126563 is an evil number, because the sum of its binary digits is even.

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

The square root of 42126563 is about 6490.4979007777. The cubic root of 42126563 is about 347.9514702001.

Adding to 42126563 its reverse (36562124), we get a palindrome (78688687).

The spelling of 42126563 in words is "forty-two million, one hundred twenty-six thousand, five hundred sixty-three".