1128129 has 8 divisors (see below), whose sum is σ = 1556160. Its totient is φ = 726096.

The previous prime is 1128109. The next prime is 1128143. The reversal of 1128129 is 9218211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128129 - 2⁹ = 1127617 is a prime.

It is a Curzon number.

1128129 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1128099 and 1128108.

It is not an unprimeable number, because it can be changed into a prime (1128109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6397 + ... + 6570.

It is an arithmetic number, because the mean of its divisors is an integer number (194520).

2^1128129 is an apocalyptic number.

It is an amenable number.

1128129 is a deficient number, since it is larger than the sum of its proper divisors (428031).

1128129 is a wasteful number, since it uses less digits than its factorization.

1128129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12999.

The product of its digits is 288, while the sum is 24.

The square root of 1128129 is about 1062.1341723153. The cubic root of 1128129 is about 104.1005253364.

The spelling of 1128129 in words is "one million, one hundred twenty-eight thousand, one hundred twenty-nine".