42856816 has 10 divisors (see below), whose sum is σ = 83035112. Its totient is φ = 21428400.

The previous prime is 42856777. The next prime is 42856819. The reversal of 42856816 is 61865824.

42856816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42856819) 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 as a sum of consecutive naturals, namely, 1339260 + ... + 1339291.

Almost surely, 2^42856816 is an apocalyptic number.

It is an amenable number.

42856816 is a deficient number, since it is larger than the sum of its proper divisors (40178296).

42856816 is a wasteful number, since it uses less digits than its factorization.

42856816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678559 (or 2678553 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 42856816 is about 6546.5117429055. The cubic root of 42856816 is about 349.9505127311.

The spelling of 42856816 in words is "forty-two million, eight hundred fifty-six thousand, eight hundred sixteen".