42146845 has 16 divisors (see below), whose sum is σ = 57335040. Its totient is φ = 29484864.

The previous prime is 42146821. The next prime is 42146849. The reversal of 42146845 is 54864124.

It is a cyclic number.

It is not a de Polignac number, because 42146845 - 2⁵ = 42146813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42146845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42146849) 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, 15829 + ... + 18298.

It is an arithmetic number, because the mean of its divisors is an integer number (3583440).

Almost surely, 2^42146845 is an apocalyptic number.

It is an amenable number.

42146845 is a deficient number, since it is larger than the sum of its proper divisors (15188195).

42146845 is a wasteful number, since it uses less digits than its factorization.

42146845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34164.

The product of its digits is 30720, while the sum is 34.

The square root of 42146845 is about 6492.0601506764. The cubic root of 42146845 is about 348.0073021104.

The spelling of 42146845 in words is "forty-two million, one hundred forty-six thousand, eight hundred forty-five".