42563489 has 4 divisors (see below), whose sum is σ = 42849300. Its totient is φ = 42277680.

The previous prime is 42563473. The next prime is 42563497. The reversal of 42563489 is 98436524.

42563489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23203489 + 19360000 = 4817^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 42563489 - 2⁴ = 42563473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42563419) 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 in 3 ways as a sum of consecutive naturals, for example, 142682 + ... + 142979.

It is an arithmetic number, because the mean of its divisors is an integer number (10712325).

Almost surely, 2^42563489 is an apocalyptic number.

It is an amenable number.

42563489 is a deficient number, since it is larger than the sum of its proper divisors (285811).

42563489 is a wasteful number, since it uses less digits than its factorization.

42563489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285810.

The product of its digits is 207360, while the sum is 41.

The square root of 42563489 is about 6524.0699720343. The cubic root of 42563489 is about 349.1502898115.

The spelling of 42563489 in words is "forty-two million, five hundred sixty-three thousand, four hundred eighty-nine".