42569984 has 18 divisors (see below), whose sum is σ = 84974190. Its totient is φ = 21284864.

The previous prime is 42569983. The next prime is 42569993. The reversal of 42569984 is 48996524.

It can be written as a sum of positive squares in only one way, i.e., 37552384 + 5017600 = 6128^2 + 2240^2 .

It is not an unprimeable number, because it can be changed into a prime (42569983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82889 + ... + 83400.

Almost surely, 2^42569984 is an apocalyptic number.

It is an amenable number.

42569984 is a deficient number, since it is larger than the sum of its proper divisors (42404206).

42569984 is an equidigital number, since it uses as much as digits as its factorization.

42569984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166305 (or 166291 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 42569984 is about 6524.5677251447. The cubic root of 42569984 is about 349.1680485044.

The spelling of 42569984 in words is "forty-two million, five hundred sixty-nine thousand, nine hundred eighty-four".