42195243 has 8 divisors (see below), whose sum is σ = 56972800. Its totient is φ = 27773928.

The previous prime is 42195227. The next prime is 42195253. The reversal of 42195243 is 34259124.

42195243 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 not a de Polignac number, because 42195243 - 2⁴ = 42195227 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 42195243.

It is not an unprimeable number, because it can be changed into a prime (42195253) 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, 88783 + ... + 89256.

It is an arithmetic number, because the mean of its divisors is an integer number (7121600).

Almost surely, 2^42195243 is an apocalyptic number.

42195243 is a deficient number, since it is larger than the sum of its proper divisors (14777557).

42195243 is a wasteful number, since it uses less digits than its factorization.

42195243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178121.

The product of its digits is 8640, while the sum is 30.

The square root of 42195243 is about 6495.7865574540. The cubic root of 42195243 is about 348.1404588906.

The spelling of 42195243 in words is "forty-two million, one hundred ninety-five thousand, two hundred forty-three".