42739628 has 12 divisors (see below), whose sum is σ = 75171600. Its totient is φ = 21262032.

The previous prime is 42739601. The next prime is 42739633. The reversal of 42739628 is 82693724.

It is a happy number.

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, 26051 + ... + 27642.

It is an arithmetic number, because the mean of its divisors is an integer number (6264300).

Almost surely, 2^42739628 is an apocalyptic number.

It is an amenable number.

42739628 is a deficient number, since it is larger than the sum of its proper divisors (32431972).

42739628 is a wasteful number, since it uses less digits than its factorization.

42739628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53896 (or 53894 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 42739628 is about 6537.5552005318. Note that the first 3 decimals coincide. The cubic root of 42739628 is about 349.6312524535.

The spelling of 42739628 in words is "forty-two million, seven hundred thirty-nine thousand, six hundred twenty-eight".