42328689 has 8 divisors (see below), whose sum is σ = 60779712. Its totient is φ = 26048400.

The previous prime is 42328651. The next prime is 42328721. The reversal of 42328689 is 98682324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42328689 - 2¹² = 42324593 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42328689.

It is not an unprimeable number, because it can be changed into a prime (42328639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542637 + ... + 542714.

It is an arithmetic number, because the mean of its divisors is an integer number (7597464).

Almost surely, 2^42328689 is an apocalyptic number.

It is an amenable number.

42328689 is a deficient number, since it is larger than the sum of its proper divisors (18451023).

42328689 is a wasteful number, since it uses less digits than its factorization.

42328689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085367.

The product of its digits is 165888, while the sum is 42.

The square root of 42328689 is about 6506.0501842516. The cubic root of 42328689 is about 348.5070804852.

It can be divided in two parts, 4232 and 8689, that added together give a palindrome (12921).

The spelling of 42328689 in words is "forty-two million, three hundred twenty-eight thousand, six hundred eighty-nine".