42684816 has 40 divisors (see below), whose sum is σ = 111091104. Its totient is φ = 14122240.

The previous prime is 42684797. The next prime is 42684821. The reversal of 42684816 is 61848624.

It is a super-3 number, since 3×42684816³ (a number of 24 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3331 + ... + 9821.

Almost surely, 2^42684816 is an apocalyptic number.

It is an amenable number.

42684816 is an abundant number, since it is smaller than the sum of its proper divisors (68406288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42684816 is a wasteful number, since it uses less digits than its factorization.

42684816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6639 (or 6633 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 42684816 is about 6533.3617686456. The cubic root of 42684816 is about 349.4817254429.

The spelling of 42684816 in words is "forty-two million, six hundred eighty-four thousand, eight hundred sixteen".