1128499 has 2 divisors, whose sum is σ = 1128500. Its totient is φ = 1128498.

The previous prime is 1128497. The next prime is 1128503. The reversal of 1128499 is 9948211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128499 - 2¹ = 1128497 is a prime.

Together with 1128497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1128497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564249 + 564250.

It is an arithmetic number, because the mean of its divisors is an integer number (564250).

2^1128499 is an apocalyptic number.

1128499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128499 is an equidigital number, since it uses as much as digits as its factorization.

1128499 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 1128499 is about 1062.3083356540. The cubic root of 1128499 is about 104.1119049406. Note that the first 3 decimals are identical.

The spelling of 1128499 in words is "one million, one hundred twenty-eight thousand, four hundred ninety-nine".