42987684 has 24 divisors (see below), whose sum is σ = 101341408. Its totient is φ = 14181120.

The previous prime is 42987647. The next prime is 42987689. The reversal of 42987684 is 48678924.

42987684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42987689) 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 7 ways as a sum of consecutive naturals, for example, 17302 + ... + 19629.

Almost surely, 2^42987684 is an apocalyptic number.

It is an amenable number.

42987684 is an abundant number, since it is smaller than the sum of its proper divisors (58353724).

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

42987684 is a wasteful number, since it uses less digits than its factorization.

42987684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37035 (or 37033 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 42987684 is about 6556.4993708533. The cubic root of 42987684 is about 350.3063548987.

The spelling of 42987684 in words is "forty-two million, nine hundred eighty-seven thousand, six hundred eighty-four".