7402217 has 2 divisors, whose sum is σ = 7402218. Its totient is φ = 7402216.

The previous prime is 7402207. The next prime is 7402223. The reversal of 7402217 is 7122047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7311616 + 90601 = 2704^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 7402217 - 2⁴ = 7402201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7402192 and 7402201.

It is not a weakly prime, because it can be changed into another prime (7402207) 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, 3701108 + 3701109.

It is an arithmetic number, because the mean of its divisors is an integer number (3701109).

Almost surely, 2^7402217 is an apocalyptic number.

It is an amenable number.

7402217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7402217 is an equidigital number, since it uses as much as digits as its factorization.

7402217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 7402217 is about 2720.7015639353. The cubic root of 7402217 is about 194.8889747122. Note that the first 3 decimals are identical.

The spelling of 7402217 in words is "seven million, four hundred two thousand, two hundred seventeen".