42075128 has 8 divisors (see below), whose sum is σ = 78890880. Its totient is φ = 21037560.

The previous prime is 42075127. The next prime is 42075133. The reversal of 42075128 is 82157024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42075128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42075127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2629688 + ... + 2629703.

It is an arithmetic number, because the mean of its divisors is an integer number (9861360).

Almost surely, 2^42075128 is an apocalyptic number.

It is an amenable number.

42075128 is a deficient number, since it is larger than the sum of its proper divisors (36815752).

42075128 is a wasteful number, since it uses less digits than its factorization.

42075128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259397 (or 5259393 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 42075128 is about 6486.5343597332. The cubic root of 42075128 is about 347.8098005001.

The spelling of 42075128 in words is "forty-two million, seventy-five thousand, one hundred twenty-eight".