7405247 has 2 divisors, whose sum is σ = 7405248. Its totient is φ = 7405246.

The previous prime is 7405199. The next prime is 7405259. The reversal of 7405247 is 7425047.

7405247 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 is a cyclic number.

It is not a de Polignac number, because 7405247 - 2¹⁰ = 7404223 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 (7405547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702623 + 3702624.

It is an arithmetic number, because the mean of its divisors is an integer number (3702624).

Almost surely, 2^7405247 is an apocalyptic number.

7405247 is a deficient number, since it is larger than the sum of its proper divisors (1).

7405247 is an equidigital number, since it uses as much as digits as its factorization.

7405247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 7405247 is about 2721.2583486321. The cubic root of 7405247 is about 194.9155628294.

The spelling of 7405247 in words is "seven million, four hundred five thousand, two hundred forty-seven".