42456563 has 2 divisors, whose sum is σ = 42456564. Its totient is φ = 42456562.

The previous prime is 42456559. The next prime is 42456569. The reversal of 42456563 is 36565424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42456563 - 2² = 42456559 is a prime.

It is not a weakly prime, because it can be changed into another prime (42456569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21228281 + 21228282.

It is an arithmetic number, because the mean of its divisors is an integer number (21228282).

Almost surely, 2^42456563 is an apocalyptic number.

42456563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42456563 is an equidigital number, since it uses as much as digits as its factorization.

42456563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 35.

The square root of 42456563 is about 6515.8700877166. The cubic root of 42456563 is about 348.8576716486.

The spelling of 42456563 in words is "forty-two million, four hundred fifty-six thousand, five hundred sixty-three".