42668589 has 16 divisors (see below), whose sum is σ = 60426432. Its totient is φ = 26688768.

The previous prime is 42668543. The next prime is 42668627. The reversal of 42668589 is 98586624.

It is a happy number.

It is not a de Polignac number, because 42668589 - 2¹⁹ = 42144301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42668539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17902 + ... + 20144.

It is an arithmetic number, because the mean of its divisors is an integer number (3776652).

Almost surely, 2^42668589 is an apocalyptic number.

It is an amenable number.

42668589 is a deficient number, since it is larger than the sum of its proper divisors (17757843).

42668589 is a wasteful number, since it uses less digits than its factorization.

42668589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636.

The product of its digits is 829440, while the sum is 48.

The square root of 42668589 is about 6532.1197937576. The cubic root of 42668589 is about 349.4374336684.

The spelling of 42668589 in words is "forty-two million, six hundred sixty-eight thousand, five hundred eighty-nine".