1028129 has 2 divisors, whose sum is σ = 1028130. Its totient is φ = 1028128.

The previous prime is 1028117. The next prime is 1028141. The reversal of 1028129 is 9218201.

It is a balanced prime because it is at equal distance from previous prime (1028117) and next prime (1028141).

It can be written as a sum of positive squares in only one way, i.e., 640000 + 388129 = 800^2 + 623^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028129 - 2⁴ = 1028113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1028149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514064 + 514065.

It is an arithmetic number, because the mean of its divisors is an integer number (514065).

2^1028129 is an apocalyptic number.

It is an amenable number.

1028129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028129 is an equidigital number, since it uses as much as digits as its factorization.

1028129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1028129 is about 1013.9669619864. The cubic root of 1028129 is about 100.9289766340.

The spelling of 1028129 in words is "one million, twenty-eight thousand, one hundred twenty-nine".