42320818 has 32 divisors (see below), whose sum is σ = 67417920. Its totient is φ = 19905600.

The previous prime is 42320813. The next prime is 42320819. The reversal of 42320818 is 81802324.

It is not an unprimeable number, because it can be changed into a prime (42320813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418968 + ... + 419068.

It is an arithmetic number, because the mean of its divisors is an integer number (2106810).

Almost surely, 2^42320818 is an apocalyptic number.

42320818 is a deficient number, since it is larger than the sum of its proper divisors (25097102).

42320818 is a wasteful number, since it uses less digits than its factorization.

42320818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 42320818 is about 6505.4452576284. The cubic root of 42320818 is about 348.4854775697.

The spelling of 42320818 in words is "forty-two million, three hundred twenty thousand, eight hundred eighteen".