1145330123 has 16 divisors (see below), whose sum is σ = 1352355840. Its totient is φ = 949212000.

The previous prime is 1145330111. The next prime is 1145330141. The reversal of 1145330123 is 3210335411.

It is a cyclic number.

It is not a de Polignac number, because 1145330123 - 2⁴ = 1145330107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145330143) 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 15 ways as a sum of consecutive naturals, for example, 447698 + ... + 450248.

It is an arithmetic number, because the mean of its divisors is an integer number (84522240).

Almost surely, 2^1145330123 is an apocalyptic number.

1145330123 is a deficient number, since it is larger than the sum of its proper divisors (207025717).

1145330123 is a wasteful number, since it uses less digits than its factorization.

1145330123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1145330123 is about 33842.7262938434. The cubic root of 1145330123 is about 1046.2694897324.

Adding to 1145330123 its reverse (3210335411), we get a palindrome (4355665534).

The spelling of 1145330123 in words is "one billion, one hundred forty-five million, three hundred thirty thousand, one hundred twenty-three".