42321386 has 16 divisors (see below), whose sum is σ = 65845248. Its totient is φ = 20379600.

The previous prime is 42321371. The next prime is 42321397. The reversal of 42321386 is 68312324.

42321386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12296 + ... + 15356.

It is an arithmetic number, because the mean of its divisors is an integer number (4115328).

Almost surely, 2^42321386 is an apocalyptic number.

42321386 is a deficient number, since it is larger than the sum of its proper divisors (23523862).

42321386 is a wasteful number, since it uses less digits than its factorization.

42321386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317.

The product of its digits is 6912, while the sum is 29.

The square root of 42321386 is about 6505.4889132178. The cubic root of 42321386 is about 348.4870366044.

The spelling of 42321386 in words is "forty-two million, three hundred twenty-one thousand, three hundred eighty-six".