42361818 has 32 divisors (see below), whose sum is σ = 87595776. Its totient is φ = 13647168.

The previous prime is 42361801. The next prime is 42361829. The reversal of 42361818 is 81816324.

42361818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 37855 + ... + 38957.

It is an arithmetic number, because the mean of its divisors is an integer number (2737368).

Almost surely, 2^42361818 is an apocalyptic number.

42361818 is an abundant number, since it is smaller than the sum of its proper divisors (45233958).

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

42361818 is a wasteful number, since it uses less digits than its factorization.

42361818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its digits is 9216, while the sum is 33.

The square root of 42361818 is about 6508.5957010710. The cubic root of 42361818 is about 348.5979777036.

The spelling of 42361818 in words is "forty-two million, three hundred sixty-one thousand, eight hundred eighteen".