1121368840 has 16 divisors (see below), whose sum is σ = 2523079980. Its totient is φ = 448547520.

The previous prime is 1121368823. The next prime is 1121368957. The reversal of 1121368840 is 488631211.

It can be written as a sum of positive squares in 2 ways, for example, as 1121312196 + 56644 = 33486^2 + 238^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1121368796 and 1121368805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14017071 + ... + 14017150.

Almost surely, 2^1121368840 is an apocalyptic number.

1121368840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121368840 is an abundant number, since it is smaller than the sum of its proper divisors (1401711140).

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

1121368840 is a wasteful number, since it uses less digits than its factorization.

1121368840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28034232 (or 28034228 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1121368840 is about 33486.8457756176. The cubic root of 1121368840 is about 1038.9217251302.

The spelling of 1121368840 in words is "one billion, one hundred twenty-one million, three hundred sixty-eight thousand, eight hundred forty".