7422641 has 2 divisors, whose sum is σ = 7422642. Its totient is φ = 7422640.

The previous prime is 7422589. The next prime is 7422643. The reversal of 7422641 is 1462247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4532641 + 2890000 = 2129^2 + 1700^2 .

It is an emirp because it is prime and its reverse (1462247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7422641 is a prime.

Together with 7422643, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 7422641.

It is not a weakly prime, because it can be changed into another prime (7422643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3711320 + 3711321.

It is an arithmetic number, because the mean of its divisors is an integer number (3711321).

Almost surely, 2^7422641 is an apocalyptic number.

It is an amenable number.

7422641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7422641 is an equidigital number, since it uses as much as digits as its factorization.

7422641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 26.

The square root of 7422641 is about 2724.4524220474. The cubic root of 7422641 is about 195.0680542654.

Adding to 7422641 its reverse (1462247), we get a palindrome (8884888).

The spelling of 7422641 in words is "seven million, four hundred twenty-two thousand, six hundred forty-one".