42169936 has 20 divisors (see below), whose sum is σ = 83913652. Its totient is φ = 20514816.

The previous prime is 42169931. The next prime is 42169937. The reversal of 42169936 is 63996124.

It can be written as a sum of positive squares in 2 ways, for example, as 34574400 + 7595536 = 5880^2 + 2756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42169931) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 35025 + ... + 36208.

Almost surely, 2^42169936 is an apocalyptic number.

It is an amenable number.

42169936 is a deficient number, since it is larger than the sum of its proper divisors (41743716).

42169936 is a wasteful number, since it uses less digits than its factorization.

42169936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71278 (or 71272 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The square root of 42169936 is about 6493.8383102754. The cubic root of 42169936 is about 348.0708447831.

The spelling of 42169936 in words is "forty-two million, one hundred sixty-nine thousand, nine hundred thirty-six".