43218842 has 8 divisors (see below), whose sum is σ = 65301876. Its totient is φ = 21451552.

The previous prime is 43218841. The next prime is 43218871. The reversal of 43218842 is 24881234.

It can be written as a sum of positive squares in 2 ways, for example, as 43151761 + 67081 = 6569^2 + 259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 43218799 and 43218808.

It is not an unprimeable number, because it can be changed into a prime (43218841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78593 + ... + 79140.

Almost surely, 2^43218842 is an apocalyptic number.

43218842 is a deficient number, since it is larger than the sum of its proper divisors (22083034).

43218842 is a wasteful number, since it uses less digits than its factorization.

43218842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157872.

The product of its digits is 12288, while the sum is 32.

The square root of 43218842 is about 6574.1038933074. The cubic root of 43218842 is about 350.9331344506.

The spelling of 43218842 in words is "forty-three million, two hundred eighteen thousand, eight hundred forty-two".