1121039436 has 48 divisors (see below), whose sum is σ = 2867961600. Its totient is φ = 337993920.

The previous prime is 1121039429. The next prime is 1121039473. The reversal of 1121039436 is 6349301211.

It is an unprimeable number.

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, 4930 + ... + 47606.

It is an arithmetic number, because the mean of its divisors is an integer number (59749200).

Almost surely, 2^1121039436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121039436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433980800).

1121039436 is an abundant number, since it is smaller than the sum of its proper divisors (1746922164).

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

1121039436 is a wasteful number, since it uses less digits than its factorization.

1121039436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42894 (or 42892 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1121039436 is about 33481.9270054757. The cubic root of 1121039436 is about 1038.8199868276.

The spelling of 1121039436 in words is "one billion, one hundred twenty-one million, thirty-nine thousand, four hundred thirty-six".