42087184 has 20 divisors (see below), whose sum is σ = 83280384. Its totient is φ = 20595488.

The previous prime is 42087169. The next prime is 42087187. The reversal of 42087184 is 48178024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42087187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27232 + ... + 28735.

Almost surely, 2^42087184 is an apocalyptic number.

It is an amenable number.

42087184 is a deficient number, since it is larger than the sum of its proper divisors (41193200).

42087184 is a wasteful number, since it uses less digits than its factorization.

42087184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56022 (or 56016 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 42087184 is about 6487.4636029808. The cubic root of 42087184 is about 347.8430172303.

The spelling of 42087184 in words is "forty-two million, eighty-seven thousand, one hundred eighty-four".