7244021 has 2 divisors, whose sum is σ = 7244022. Its totient is φ = 7244020.

The previous prime is 7243993. The next prime is 7244047. The reversal of 7244021 is 1204427.

7244021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7236100 + 7921 = 2690^2 + 89^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7244021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7243984 and 7244002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7244521) 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 as a sum of consecutive naturals, namely, 3622010 + 3622011.

It is an arithmetic number, because the mean of its divisors is an integer number (3622011).

Almost surely, 2^7244021 is an apocalyptic number.

It is an amenable number.

7244021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7244021 is an equidigital number, since it uses as much as digits as its factorization.

7244021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 7244021 is about 2691.4719021383. The cubic root of 7244021 is about 193.4906128669.

Adding to 7244021 its reverse (1204427), we get a palindrome (8448448).

The spelling of 7244021 in words is "seven million, two hundred forty-four thousand, twenty-one".