1128045 has 16 divisors (see below), whose sum is σ = 1820160. Its totient is φ = 596544.

The previous prime is 1128037. The next prime is 1128089. The reversal of 1128045 is 5408211.

It is not a de Polignac number, because 1128045 - 2³ = 1128037 is a prime.

1128045 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2116 + ... + 2594.

It is an arithmetic number, because the mean of its divisors is an integer number (113760).

2^1128045 is an apocalyptic number.

1128045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1128045 is a deficient number, since it is larger than the sum of its proper divisors (692115).

1128045 is a wasteful number, since it uses less digits than its factorization.

1128045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1128045 is about 1062.0946285525. The cubic root of 1128045 is about 104.0979415122.

It can be divided in two parts, 11280 and 45, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 1128045 in words is "one million, one hundred twenty-eight thousand, forty-five".