42845128 has 16 divisors (see below), whose sum is σ = 80411760. Its totient is φ = 21402000.

The previous prime is 42845111. The next prime is 42845137. The reversal of 42845128 is 82154824.

It is a junction number, because it is equal to n+sod(n) for n = 42845093 and 42845102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9763 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (5025735).

Almost surely, 2^42845128 is an apocalyptic number.

It is an amenable number.

42845128 is a deficient number, since it is larger than the sum of its proper divisors (37566632).

42845128 is a wasteful number, since it uses less digits than its factorization.

42845128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148 (or 5144 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 42845128 is about 6545.6189928837. The cubic root of 42845128 is about 349.9186967614.

The spelling of 42845128 in words is "forty-two million, eight hundred forty-five thousand, one hundred twenty-eight".