1129643 has 2 divisors, whose sum is σ = 1129644. Its totient is φ = 1129642.

The previous prime is 1129619. The next prime is 1129663. The reversal of 1129643 is 3469211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1129603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564821 + 564822.

It is an arithmetic number, because the mean of its divisors is an integer number (564822).

2^1129643 is an apocalyptic number.

1129643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129643 is an equidigital number, since it uses as much as digits as its factorization.

1129643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 1129643 is about 1062.8466493338. The cubic root of 1129643 is about 104.1470737194.

The spelling of 1129643 in words is "one million, one hundred twenty-nine thousand, six hundred forty-three".