7420339 has 2 divisors, whose sum is σ = 7420340. Its totient is φ = 7420338.

The previous prime is 7420337. The next prime is 7420363. The reversal of 7420339 is 9330247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7420339 - 2¹ = 7420337 is a prime.

It is a super-2 number, since 2×7420339² = 110122861749842, which contains 22 as substring.

Together with 7420337, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7420333) 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, 3710169 + 3710170.

It is an arithmetic number, because the mean of its divisors is an integer number (3710170).

Almost surely, 2^7420339 is an apocalyptic number.

7420339 is a deficient number, since it is larger than the sum of its proper divisors (1).

7420339 is an equidigital number, since it uses as much as digits as its factorization.

7420339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 7420339 is about 2724.0299190721. The cubic root of 7420339 is about 195.0478865520.

The spelling of 7420339 in words is "seven million, four hundred twenty thousand, three hundred thirty-nine".