42599984 has 40 divisors (see below), whose sum is σ = 96639648. Its totient is φ = 17809920.

The previous prime is 42599981. The next prime is 42599989. The reversal of 42599984 is 48999524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42599981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47 + ... + 9230.

Almost surely, 2^42599984 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 42599984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48319824).

42599984 is an abundant number, since it is smaller than the sum of its proper divisors (54039664).

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

42599984 is a wasteful number, since it uses less digits than its factorization.

42599984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9333 (or 9327 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 42599984 is about 6526.8663231293. The cubic root of 42599984 is about 349.2500513679.

The spelling of 42599984 in words is "forty-two million, five hundred ninety-nine thousand, nine hundred eighty-four".