1298131 has 2 divisors, whose sum is σ = 1298132. Its totient is φ = 1298130.

The previous prime is 1298119. The next prime is 1298149. The reversal of 1298131 is 1318921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298131 - 2⁹ = 1297619 is a prime.

It is a super-2 number, since 2×1298131² = 3370288186322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1298096 and 1298105.

It is not a weakly prime, because it can be changed into another prime (1298111) 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, 649065 + 649066.

It is an arithmetic number, because the mean of its divisors is an integer number (649066).

2^1298131 is an apocalyptic number.

1298131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298131 is an equidigital number, since it uses as much as digits as its factorization.

1298131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The square root of 1298131 is about 1139.3555195811. The cubic root of 1298131 is about 109.0869603158.

The spelling of 1298131 in words is "one million, two hundred ninety-eight thousand, one hundred thirty-one".