42195688 has 16 divisors (see below), whose sum is σ = 81255780. Its totient is φ = 20527488.

The previous prime is 42195677. The next prime is 42195691. The reversal of 42195688 is 88659124.

It is a happy number.

42195688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41757444 + 438244 = 6462^2 + 662^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 70981 + ... + 71572.

Almost surely, 2^42195688 is an apocalyptic number.

It is an amenable number.

42195688 is a deficient number, since it is larger than the sum of its proper divisors (39060092).

42195688 is a wasteful number, since it uses less digits than its factorization.

42195688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142596 (or 142592 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 42195688 is about 6495.8208103364. The cubic root of 42195688 is about 348.1416827407.

The spelling of 42195688 in words is "forty-two million, one hundred ninety-five thousand, six hundred eighty-eight".