42387984 has 60 divisors (see below), whose sum is σ = 121170816. Its totient is φ = 13826496.

The previous prime is 42387979. The next prime is 42388009. The reversal of 42387984 is 48978324.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3637 + ... + 9899.

Almost surely, 2^42387984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42387984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60585408).

42387984 is an abundant number, since it is smaller than the sum of its proper divisors (78782832).

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

42387984 is a wasteful number, since it uses less digits than its factorization.

42387984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324 (or 6315 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 42387984 is about 6510.6055017947. The cubic root of 42387984 is about 348.6697367996.

The spelling of 42387984 in words is "forty-two million, three hundred eighty-seven thousand, nine hundred eighty-four".