42182689 has 4 divisors (see below), whose sum is σ = 42208660. Its totient is φ = 42156720.

The previous prime is 42182687. The next prime is 42182719. The reversal of 42182689 is 98628124.

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 1440000 + 40742689 = 1200^2 + 6383^2 .

It is a cyclic number.

It is not a de Polignac number, because 42182689 - 2¹ = 42182687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42182687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10374 + ... + 13855.

It is an arithmetic number, because the mean of its divisors is an integer number (10552165).

Almost surely, 2^42182689 is an apocalyptic number.

It is an amenable number.

42182689 is a deficient number, since it is larger than the sum of its proper divisors (25971).

42182689 is a wasteful number, since it uses less digits than its factorization.

42182689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25970.

The product of its digits is 55296, while the sum is 40.

The square root of 42182689 is about 6494.8201668714. The cubic root of 42182689 is about 348.1059290200.

The spelling of 42182689 in words is "forty-two million, one hundred eighty-two thousand, six hundred eighty-nine".