1112123405 has 16 divisors (see below), whose sum is σ = 1366869504. Its totient is φ = 868190400.

The previous prime is 1112123387. The next prime is 1112123429. The reversal of 1112123405 is 5043212111.

It is a de Polignac number, because none of the positive numbers 2^k-1112123405 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 335255 + ... + 338555.

It is an arithmetic number, because the mean of its divisors is an integer number (85429344).

Almost surely, 2^1112123405 is an apocalyptic number.

It is an amenable number.

1112123405 is a deficient number, since it is larger than the sum of its proper divisors (254746099).

1112123405 is a wasteful number, since it uses less digits than its factorization.

1112123405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1112123405 is about 33348.5142847474. The cubic root of 1112123405 is about 1036.0586164243.

Adding to 1112123405 its reverse (5043212111), we get a palindrome (6155335516).

The spelling of 1112123405 in words is "one billion, one hundred twelve million, one hundred twenty-three thousand, four hundred five".