42845491 has 8 divisors (see below), whose sum is σ = 48855744. Its totient is φ = 37223040.

The previous prime is 42845489. The next prime is 42845497. The reversal of 42845491 is 19454824.

42845491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42845491 - 2¹ = 42845489 is a prime.

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 42845491.

It is not an unprimeable number, because it can be changed into a prime (42845497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96715 + ... + 97156.

It is an arithmetic number, because the mean of its divisors is an integer number (6106968).

Almost surely, 2^42845491 is an apocalyptic number.

42845491 is a deficient number, since it is larger than the sum of its proper divisors (6010253).

42845491 is a wasteful number, since it uses less digits than its factorization.

42845491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193901.

The product of its digits is 46080, while the sum is 37.

The square root of 42845491 is about 6545.6467212950. The cubic root of 42845491 is about 349.9196849728.

The spelling of 42845491 in words is "forty-two million, eight hundred forty-five thousand, four hundred ninety-one".