7419221 has 2 divisors, whose sum is σ = 7419222. Its totient is φ = 7419220.

The previous prime is 7419197. The next prime is 7419227. The reversal of 7419221 is 1229147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4778596 + 2640625 = 2186^2 + 1625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7419221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7419227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3709610 + 3709611.

It is an arithmetic number, because the mean of its divisors is an integer number (3709611).

Almost surely, 2^7419221 is an apocalyptic number.

It is an amenable number.

7419221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7419221 is an equidigital number, since it uses as much as digits as its factorization.

7419221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 7419221 is about 2723.8247006737. The cubic root of 7419221 is about 195.0380903019.

The spelling of 7419221 in words is "seven million, four hundred nineteen thousand, two hundred twenty-one".