42587563 has 2 divisors, whose sum is σ = 42587564. Its totient is φ = 42587562.

The previous prime is 42587551. The next prime is 42587581. The reversal of 42587563 is 36578524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42587563 is a prime.

It is not a weakly prime, because it can be changed into another prime (42581563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21293781 + 21293782.

It is an arithmetic number, because the mean of its divisors is an integer number (21293782).

Almost surely, 2^42587563 is an apocalyptic number.

42587563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42587563 is an equidigital number, since it uses as much as digits as its factorization.

42587563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The square root of 42587563 is about 6525.9147251554. The cubic root of 42587563 is about 349.2161041206.

The spelling of 42587563 in words is "forty-two million, five hundred eighty-seven thousand, five hundred sixty-three".