42824864 has 12 divisors (see below), whose sum is σ = 84311514. Its totient is φ = 21412416.

The previous prime is 42824843. The next prime is 42824891. The reversal of 42824864 is 46842824.

It can be written as a sum of positive squares in only one way, i.e., 24403600 + 18421264 = 4940^2 + 4292^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669107 + ... + 669170.

Almost surely, 2^42824864 is an apocalyptic number.

It is an amenable number.

42824864 is a deficient number, since it is larger than the sum of its proper divisors (41486650).

42824864 is a wasteful number, since it uses less digits than its factorization.

42824864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338287 (or 1338279 counting only the distinct ones).

The product of its digits is 98304, while the sum is 38.

The square root of 42824864 is about 6544.0709042614. The cubic root of 42824864 is about 349.8635222995.

The spelling of 42824864 in words is "forty-two million, eight hundred twenty-four thousand, eight hundred sixty-four".