42816087 has 16 divisors (see below), whose sum is σ = 66190080. Its totient is φ = 27302616.

The previous prime is 42816079. The next prime is 42816097. The reversal of 42816087 is 78061824.

42816087 is a `hidden beast` number, since 42 + 8 + 1 + 608 + 7 = 666.

42816087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42816087 - 2³ = 42816079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42816077) 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 in 15 ways as a sum of consecutive naturals, for example, 33853 + ... + 35094.

It is an arithmetic number, because the mean of its divisors is an integer number (4136880).

Almost surely, 2^42816087 is an apocalyptic number.

42816087 is a deficient number, since it is larger than the sum of its proper divisors (23373993).

42816087 is a wasteful number, since it uses less digits than its factorization.

42816087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68979 (or 68973 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 42816087 is about 6543.4002628603. The cubic root of 42816087 is about 349.8396190367.

The spelling of 42816087 in words is "forty-two million, eight hundred sixteen thousand, eighty-seven".