42189656 has 32 divisors (see below), whose sum is σ = 81496800. Its totient is φ = 20463360.

The previous prime is 42189629. The next prime is 42189743. The reversal of 42189656 is 65698124.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95885 + ... + 96323.

It is an arithmetic number, because the mean of its divisors is an integer number (2546775).

Almost surely, 2^42189656 is an apocalyptic number.

It is an amenable number.

42189656 is a deficient number, since it is larger than the sum of its proper divisors (39307144).

42189656 is a wasteful number, since it uses less digits than its factorization.

42189656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 775 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 42189656 is about 6495.3564952203. The cubic root of 42189656 is about 348.1250926514.

The spelling of 42189656 in words is "forty-two million, one hundred eighty-nine thousand, six hundred fifty-six".