1128247 has 2 divisors, whose sum is σ = 1128248. Its totient is φ = 1128246.

The previous prime is 1128233. The next prime is 1128251. The reversal of 1128247 is 7428211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564123 + 564124.

It is an arithmetic number, because the mean of its divisors is an integer number (564124).

2^1128247 is an apocalyptic number.

1128247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128247 is an equidigital number, since it uses as much as digits as its factorization.

1128247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 25.

The square root of 1128247 is about 1062.1897194004. The cubic root of 1128247 is about 104.1041547777.

The spelling of 1128247 in words is "one million, one hundred twenty-eight thousand, two hundred forty-seven".