7142111 has 2 divisors, whose sum is σ = 7142112. Its totient is φ = 7142110.

The previous prime is 7142053. The next prime is 7142117. The reversal of 7142111 is 1112417.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7142111 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7142111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7142117) 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, 3571055 + 3571056.

It is an arithmetic number, because the mean of its divisors is an integer number (3571056).

Almost surely, 2^7142111 is an apocalyptic number.

7142111 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142111 is an equidigital number, since it uses as much as digits as its factorization.

7142111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56, while the sum is 17.

The square root of 7142111 is about 2672.4728249320. The cubic root of 7142111 is about 192.5789724886.

Adding to 7142111 its reverse (1112417), we get a palindrome (8254528).

It can be divided in two parts, 71421 and 11, that multiplied together give a triangular number (785631 = T₁₂₅₃).

The spelling of 7142111 in words is "seven million, one hundred forty-two thousand, one hundred eleven".