1298111 has 2 divisors, whose sum is σ = 1298112. Its totient is φ = 1298110.

The previous prime is 1298057. The next prime is 1298113. The reversal of 1298111 is 1118921.

It is a strong prime.

It is an emirp because it is prime and its reverse (1118921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298111 - 2⁶ = 1298047 is a prime.

Together with 1298113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649055 + 649056.

It is an arithmetic number, because the mean of its divisors is an integer number (649056).

2^1298111 is an apocalyptic number.

1298111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298111 is an equidigital number, since it uses as much as digits as its factorization.

1298111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 23.

The square root of 1298111 is about 1139.3467426556. The cubic root of 1298111 is about 109.0864000872.

The spelling of 1298111 in words is "one million, two hundred ninety-eight thousand, one hundred eleven".