42178097 has 16 divisors (see below), whose sum is σ = 46663680. Its totient is φ = 37884672.

The previous prime is 42178063. The next prime is 42178109. The reversal of 42178097 is 79087124.

It is a cyclic number.

It is not a de Polignac number, because 42178097 - 2⁸ = 42177841 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42178097.

It is not an unprimeable number, because it can be changed into a prime (42178007) 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 15 ways as a sum of consecutive naturals, for example, 97193 + ... + 97625.

It is an arithmetic number, because the mean of its divisors is an integer number (2916480).

Almost surely, 2^42178097 is an apocalyptic number.

It is an amenable number.

42178097 is a deficient number, since it is larger than the sum of its proper divisors (4485583).

42178097 is a wasteful number, since it uses less digits than its factorization.

42178097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 42178097 is about 6494.4666447677. The cubic root of 42178097 is about 348.0932969786.

The spelling of 42178097 in words is "forty-two million, one hundred seventy-eight thousand, ninety-seven".