1121089424 has 120 divisors (see below), whose sum is σ = 2815679160. Its totient is φ = 428101632.

The previous prime is 1121089369. The next prime is 1121089427. The reversal of 1121089424 is 4249801211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1517824 + 1119571600 = 1232^2 + 33460^2 .

It is not an unprimeable number, because it can be changed into a prime (1121089427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293672 + ... + 297464.

It is an arithmetic number, because the mean of its divisors is an integer number (23463993).

Almost surely, 2^1121089424 is an apocalyptic number.

1121089424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121089424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407839580).

1121089424 is an abundant number, since it is smaller than the sum of its proper divisors (1694589736).

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

1121089424 is a wasteful number, since it uses less digits than its factorization.

1121089424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857 (or 3844 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1121089424 is about 33482.6734894333. The cubic root of 1121089424 is about 1038.8354271888.

The spelling of 1121089424 in words is "one billion, one hundred twenty-one million, eighty-nine thousand, four hundred twenty-four".