42108489 has 6 divisors (see below), whose sum is σ = 60823386. Its totient is φ = 28072320.

The previous prime is 42108463. The next prime is 42108491. The reversal of 42108489 is 98480124.

It can be written as a sum of positive squares in only one way, i.e., 24088464 + 18020025 = 4908^2 + 4245^2 .

It is not a de Polignac number, because 42108489 - 2⁸ = 42108233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42108449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2339352 + ... + 2339369.

It is an arithmetic number, because the mean of its divisors is an integer number (10137231).

Almost surely, 2^42108489 is an apocalyptic number.

It is an amenable number.

42108489 is a deficient number, since it is larger than the sum of its proper divisors (18714897).

42108489 is a wasteful number, since it uses less digits than its factorization.

42108489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678727 (or 4678724 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 42108489 is about 6489.1054082978. The cubic root of 42108489 is about 347.9017013288.

The spelling of 42108489 in words is "forty-two million, one hundred eight thousand, four hundred eighty-nine".