42864020 has 12 divisors (see below), whose sum is σ = 90014484. Its totient is φ = 17145600.

The previous prime is 42864011. The next prime is 42864053. The reversal of 42864020 is 2046824.

It can be written as a sum of positive squares in 2 ways, for example, as 9709456 + 33154564 = 3116^2 + 5758^2 .

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 1071581 + ... + 1071620.

It is an arithmetic number, because the mean of its divisors is an integer number (7501207).

Almost surely, 2^42864020 is an apocalyptic number.

It is an amenable number.

42864020 is an abundant number, since it is smaller than the sum of its proper divisors (47150464).

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

42864020 is a wasteful number, since it uses less digits than its factorization.

42864020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143210 (or 2143208 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 42864020 is about 6547.0619364720. The cubic root of 42864020 is about 349.9701198981.

The spelling of 42864020 in words is "forty-two million, eight hundred sixty-four thousand, twenty".