42075870 has 16 divisors (see below), whose sum is σ = 100982160. Its totient is φ = 11220224.

The previous prime is 42075841. The next prime is 42075871. The reversal of 42075870 is 7857024.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42075871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701235 + ... + 701294.

It is an arithmetic number, because the mean of its divisors is an integer number (6311385).

Almost surely, 2^42075870 is an apocalyptic number.

42075870 is an abundant number, since it is smaller than the sum of its proper divisors (58906290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42075870 is a wasteful number, since it uses less digits than its factorization.

42075870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402539.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 42075870 is about 6486.5915548923. The cubic root of 42075870 is about 347.8118450441.

The spelling of 42075870 in words is "forty-two million, seventy-five thousand, eight hundred seventy".