7128437 has 2 divisors, whose sum is σ = 7128438. Its totient is φ = 7128436.

The previous prime is 7128427. The next prime is 7128463. The reversal of 7128437 is 7348217.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6421156 + 707281 = 2534^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 7128437 - 2⁸ = 7128181 is a prime.

It is a super-2 number, since 2×7128437² = 101629228125938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7128427) 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, 3564218 + 3564219.

It is an arithmetic number, because the mean of its divisors is an integer number (3564219).

Almost surely, 2^7128437 is an apocalyptic number.

It is an amenable number.

7128437 is a deficient number, since it is larger than the sum of its proper divisors (1).

7128437 is an equidigital number, since it uses as much as digits as its factorization.

7128437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 32.

The square root of 7128437 is about 2669.9132944723. The cubic root of 7128437 is about 192.4559926389.

The spelling of 7128437 in words is "seven million, one hundred twenty-eight thousand, four hundred thirty-seven".