42389824 has 28 divisors (see below), whose sum is σ = 85711284. Its totient is φ = 20793344.

The previous prime is 42389797. The next prime is 42389833. The reversal of 42389824 is 42898324.

It can be written as a sum of positive squares in 2 ways, for example, as 26708224 + 15681600 = 5168^2 + 3960^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2857 + ... + 9640.

Almost surely, 2^42389824 is an apocalyptic number.

It is an amenable number.

42389824 is an abundant number, since it is smaller than the sum of its proper divisors (43321460).

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

42389824 is a wasteful number, since it uses less digits than its factorization.

42389824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12562 (or 12552 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 42389824 is about 6510.7468081626. The cubic root of 42389824 is about 348.6747818066.

The spelling of 42389824 in words is "forty-two million, three hundred eighty-nine thousand, eight hundred twenty-four".