1298149 has 2 divisors, whose sum is σ = 1298150. Its totient is φ = 1298148.

The previous prime is 1298131. The next prime is 1298161. The reversal of 1298149 is 9418921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 66049 = 1110^2 + 257^2 .

It is an emirp because it is prime and its reverse (9418921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298149 - 2⁵ = 1298117 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298119) 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, 649074 + 649075.

It is an arithmetic number, because the mean of its divisors is an integer number (649075).

2^1298149 is an apocalyptic number.

It is an amenable number.

1298149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298149 is an equidigital number, since it uses as much as digits as its factorization.

1298149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 1298149 is about 1139.3634187563. The cubic root of 1298149 is about 109.0874645167.

The spelling of 1298149 in words is "one million, two hundred ninety-eight thousand, one hundred forty-nine".