1121123440 has 20 divisors (see below), whose sum is σ = 2606612184. Its totient is φ = 448449344.

The previous prime is 1121123417. The next prime is 1121123503. The reversal of 1121123440 is 443211211.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 7006942 + ... + 7007101.

Almost surely, 2^1121123440 is an apocalyptic number.

1121123440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121123440 is an abundant number, since it is smaller than the sum of its proper divisors (1485488744).

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

1121123440 is a wasteful number, since it uses less digits than its factorization.

1121123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14014056 (or 14014050 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1121123440 is about 33483.1814497966. The cubic root of 1121123440 is about 1038.8459338347.

Adding to 1121123440 its reverse (443211211), we get a palindrome (1564334651).

The spelling of 1121123440 in words is "one billion, one hundred twenty-one million, one hundred twenty-three thousand, four hundred forty".