42195409 has 8 divisors (see below), whose sum is σ = 46347840. Its totient is φ = 38236176.

The previous prime is 42195403. The next prime is 42195431. The reversal of 42195409 is 90459124.

42195409 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 42195409 - 2⁹ = 42194897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42195403) 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, 47842 + ... + 48715.

It is an arithmetic number, because the mean of its divisors is an integer number (5793480).

Almost surely, 2^42195409 is an apocalyptic number.

It is an amenable number.

42195409 is a deficient number, since it is larger than the sum of its proper divisors (4152431).

42195409 is a wasteful number, since it uses less digits than its factorization.

42195409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96599.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 42195409 is about 6495.7993349549. The cubic root of 42195409 is about 348.1409154290.

The spelling of 42195409 in words is "forty-two million, one hundred ninety-five thousand, four hundred nine".