1128451 has 2 divisors, whose sum is σ = 1128452. Its totient is φ = 1128450.

The previous prime is 1128433. The next prime is 1128497. The reversal of 1128451 is 1548211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128451 - 2¹⁷ = 997379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564225 + 564226.

It is an arithmetic number, because the mean of its divisors is an integer number (564226).

2^1128451 is an apocalyptic number.

1128451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128451 is an equidigital number, since it uses as much as digits as its factorization.

1128451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 22.

The square root of 1128451 is about 1062.2857431031. The cubic root of 1128451 is about 104.1104288080.

The spelling of 1128451 in words is "one million, one hundred twenty-eight thousand, four hundred fifty-one".