7138841 has 2 divisors, whose sum is σ = 7138842. Its totient is φ = 7138840.

The previous prime is 7138829. The next prime is 7138849. The reversal of 7138841 is 1488317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6451600 + 687241 = 2540^2 + 829^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138841 - 2⁶ = 7138777 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7138798 and 7138807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138849) 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, 3569420 + 3569421.

It is an arithmetic number, because the mean of its divisors is an integer number (3569421).

Almost surely, 2^7138841 is an apocalyptic number.

It is an amenable number.

7138841 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138841 is an equidigital number, since it uses as much as digits as its factorization.

7138841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 32.

The square root of 7138841 is about 2671.8609619514. The cubic root of 7138841 is about 192.5495773806.

The spelling of 7138841 in words is "seven million, one hundred thirty-eight thousand, eight hundred forty-one".