1147128029 has 2 divisors, whose sum is σ = 1147128030. Its totient is φ = 1147128028.

The previous prime is 1147128019. The next prime is 1147128049. The reversal of 1147128029 is 9208217411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789048100 + 358079929 = 28090^2 + 18923^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147128029 - 2¹² = 1147123933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147128029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147128019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573564014 + 573564015.

It is an arithmetic number, because the mean of its divisors is an integer number (573564015).

Almost surely, 2^1147128029 is an apocalyptic number.

It is an amenable number.

1147128029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147128029 is an equidigital number, since it uses as much as digits as its factorization.

1147128029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1147128029 is about 33869.2785426557. The cubic root of 1147128029 is about 1046.8166713461.

The spelling of 1147128029 in words is "one billion, one hundred forty-seven million, one hundred twenty-eight thousand, twenty-nine".