42885589 has 2 divisors, whose sum is σ = 42885590. Its totient is φ = 42885588.

The previous prime is 42885587. The next prime is 42885613. The reversal of 42885589 is 98558824.

42885589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 2053489 = 6390^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 42885589 - 2¹ = 42885587 is a prime.

Together with 42885587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42885581) 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, 21442794 + 21442795.

It is an arithmetic number, because the mean of its divisors is an integer number (21442795).

Almost surely, 2^42885589 is an apocalyptic number.

It is an amenable number.

42885589 is a deficient number, since it is larger than the sum of its proper divisors (1).

42885589 is an equidigital number, since it uses as much as digits as its factorization.

42885589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921600, while the sum is 49.

The square root of 42885589 is about 6548.7089567334. The cubic root of 42885589 is about 350.0288112337.

The spelling of 42885589 in words is "forty-two million, eight hundred eighty-five thousand, five hundred eighty-nine".