42877816 has 8 divisors (see below), whose sum is σ = 80395920. Its totient is φ = 21438904.

The previous prime is 42877811. The next prime is 42877817. The reversal of 42877816 is 61877824.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42877811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2679856 + ... + 2679871.

It is an arithmetic number, because the mean of its divisors is an integer number (10049490).

Almost surely, 2^42877816 is an apocalyptic number.

It is an amenable number.

42877816 is a deficient number, since it is larger than the sum of its proper divisors (37518104).

42877816 is a wasteful number, since it uses less digits than its factorization.

42877816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359733 (or 5359729 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 42877816 is about 6548.1154540830. The cubic root of 42877816 is about 350.0076624173.

The spelling of 42877816 in words is "forty-two million, eight hundred seventy-seven thousand, eight hundred sixteen".