7420289 has 2 divisors, whose sum is σ = 7420290. Its totient is φ = 7420288.

The previous prime is 7420277. The next prime is 7420307. The reversal of 7420289 is 9820247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7333264 + 87025 = 2708^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 7420289 - 2⁸ = 7420033 is a prime.

It is not a weakly prime, because it can be changed into another prime (7410289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710144 + 3710145.

It is an arithmetic number, because the mean of its divisors is an integer number (3710145).

Almost surely, 2^7420289 is an apocalyptic number.

It is an amenable number.

7420289 is a deficient number, since it is larger than the sum of its proper divisors (1).

7420289 is an equidigital number, since it uses as much as digits as its factorization.

7420289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7420289 is about 2724.0207414776. The cubic root of 7420289 is about 195.0474484580.

The spelling of 7420289 in words is "seven million, four hundred twenty thousand, two hundred eighty-nine".