42028538 has 8 divisors (see below), whose sum is σ = 63129888. Its totient is φ = 20985244.

The previous prime is 42028537. The next prime is 42028561. The reversal of 42028538 is 83582024.

42028538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (42028537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12656 + ... + 15627.

It is an arithmetic number, because the mean of its divisors is an integer number (7891236).

Almost surely, 2^42028538 is an apocalyptic number.

42028538 is a deficient number, since it is larger than the sum of its proper divisors (21101350).

42028538 is a wasteful number, since it uses less digits than its factorization.

42028538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29028.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 42028538 is about 6482.9420790255. The cubic root of 42028538 is about 347.6813759086.

The spelling of 42028538 in words is "forty-two million, twenty-eight thousand, five hundred thirty-eight".