7642111 has 2 divisors, whose sum is σ = 7642112. Its totient is φ = 7642110.

The previous prime is 7642069. The next prime is 7642121. The reversal of 7642111 is 1112467.

It is a strong prime.

It is an emirp because it is prime and its reverse (1112467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7642111 - 2⁷ = 7641983 is a prime.

7642111 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7642121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821055 + 3821056.

It is an arithmetic number, because the mean of its divisors is an integer number (3821056).

Almost surely, 2^7642111 is an apocalyptic number.

7642111 is a deficient number, since it is larger than the sum of its proper divisors (1).

7642111 is an equidigital number, since it uses as much as digits as its factorization.

7642111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 22.

The square root of 7642111 is about 2764.4368323404. The cubic root of 7642111 is about 196.9719784583.

Adding to 7642111 its reverse (1112467), we get a palindrome (8754578).

The spelling of 7642111 in words is "seven million, six hundred forty-two thousand, one hundred eleven".