1128123 has 12 divisors (see below), whose sum is σ = 1641640. Its totient is φ = 746496.

The previous prime is 1128109. The next prime is 1128143. The reversal of 1128123 is 3218211.

It is not a de Polignac number, because 1128123 - 2⁴ = 1128107 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1128096 and 1128105.

It is not an unprimeable number, because it can be changed into a prime (1128143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083 + ... + 1851.

2^1128123 is an apocalyptic number.

1128123 is a deficient number, since it is larger than the sum of its proper divisors (513517).

1128123 is a wasteful number, since it uses less digits than its factorization.

1128123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 935 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1128123 is about 1062.1313478097. The cubic root of 1128123 is about 104.1003407818.

The spelling of 1128123 in words is "one million, one hundred twenty-eight thousand, one hundred twenty-three".