1128445123 has 8 divisors (see below), whose sum is σ = 1215806816. Its totient is φ = 1041163200.

The previous prime is 1128445121. The next prime is 1128445127. The reversal of 1128445123 is 3215448211.

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

It is a cyclic number.

It is not a de Polignac number, because 1128445123 - 2¹ = 1128445121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128445121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11263 + ... + 48823.

It is an arithmetic number, because the mean of its divisors is an integer number (151975852).

Almost surely, 2^1128445123 is an apocalyptic number.

1128445123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1128445123 is a deficient number, since it is larger than the sum of its proper divisors (87361693).

1128445123 is a wasteful number, since it uses less digits than its factorization.

1128445123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39885.

The product of its digits is 7680, while the sum is 31.

The square root of 1128445123 is about 33592.3372661088. The cubic root of 1128445123 is about 1041.1024807117.

The spelling of 1128445123 in words is "one billion, one hundred twenty-eight million, four hundred forty-five thousand, one hundred twenty-three".