6642127 has 2 divisors, whose sum is σ = 6642128. Its totient is φ = 6642126.

The previous prime is 6642109. The next prime is 6642137. The reversal of 6642127 is 7212466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6642127 - 2¹¹ = 6640079 is a prime.

6642127 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6642095 and 6642104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6642137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321063 + 3321064.

It is an arithmetic number, because the mean of its divisors is an integer number (3321064).

Almost surely, 2^6642127 is an apocalyptic number.

6642127 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642127 is an equidigital number, since it uses as much as digits as its factorization.

6642127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 6642127 is about 2577.2324303407. The cubic root of 6642127 is about 187.9759947469.

The spelling of 6642127 in words is "six million, six hundred forty-two thousand, one hundred twenty-seven".