1120123305 has 24 divisors (see below), whose sum is σ = 2218911552. Its totient is φ = 512056224.

The previous prime is 1120123261. The next prime is 1120123331. The reversal of 1120123305 is 5033210211.

It is not a de Polignac number, because 1120123305 - 2⁶ = 1120123241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1777659 + ... + 1778288.

It is an arithmetic number, because the mean of its divisors is an integer number (92454648).

Almost surely, 2^1120123305 is an apocalyptic number.

1120123305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1120123305 is a deficient number, since it is larger than the sum of its proper divisors (1098788247).

1120123305 is a wasteful number, since it uses less digits than its factorization.

1120123305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555965 (or 3555962 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1120123305 is about 33468.2432314575. The cubic root of 1120123305 is about 1038.5369297149.

Adding to 1120123305 its reverse (5033210211), we get a palindrome (6153333516).

The spelling of 1120123305 in words is "one billion, one hundred twenty million, one hundred twenty-three thousand, three hundred five".