42078175 has 12 divisors (see below), whose sum is σ = 52297000. Its totient is φ = 33585120.

The previous prime is 42078173. The next prime is 42078181. The reversal of 42078175 is 57187024.

It is a happy number.

It is not a de Polignac number, because 42078175 - 2¹ = 42078173 is a prime.

It is a super-2 number, since 2×42078175² = 3541145622661250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42078175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42078173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10789 + ... + 14161.

Almost surely, 2^42078175 is an apocalyptic number.

42078175 is a deficient number, since it is larger than the sum of its proper divisors (10218825).

42078175 is a wasteful number, since it uses less digits than its factorization.

42078175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882 (or 3877 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 42078175 is about 6486.7692266644. The cubic root of 42078175 is about 347.8181962035.

The spelling of 42078175 in words is "forty-two million, seventy-eight thousand, one hundred seventy-five".