1123305126 has 64 divisors (see below), whose sum is σ = 2380976640. Its totient is φ = 352823040.

The previous prime is 1123305121. The next prime is 1123305143. The reversal of 1123305126 is 6215033211.

It is a junction number, because it is equal to n+sod(n) for n = 1123305096 and 1123305105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123305121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1519665 + ... + 1520403.

It is an arithmetic number, because the mean of its divisors is an integer number (37202760).

Almost surely, 2^1123305126 is an apocalyptic number.

1123305126 is an abundant number, since it is smaller than the sum of its proper divisors (1257671514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123305126 is a wasteful number, since it uses less digits than its factorization.

1123305126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1123305126 is about 33515.7444494375. The cubic root of 1123305126 is about 1039.5193556866.

Adding to 1123305126 its reverse (6215033211), we get a palindrome (7338338337).

The spelling of 1123305126 in words is "one billion, one hundred twenty-three million, three hundred five thousand, one hundred twenty-six".