7218041 has 4 divisors (see below), whose sum is σ = 7228800. Its totient is φ = 7207284.

The previous prime is 7218019. The next prime is 7218049. The reversal of 7218041 is 1408127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7218041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7217998 and 7218016.

It is not an unprimeable number, because it can be changed into a prime (7218049) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4301 + ... + 5738.

It is an arithmetic number, because the mean of its divisors is an integer number (1807200).

Almost surely, 2^7218041 is an apocalyptic number.

It is an amenable number.

7218041 is a deficient number, since it is larger than the sum of its proper divisors (10759).

7218041 is a wasteful number, since it uses less digits than its factorization.

7218041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10758.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 7218041 is about 2686.6412116247. The cubic root of 7218041 is about 193.2590238268.

The spelling of 7218041 in words is "seven million, two hundred eighteen thousand, forty-one".