1121303424 has 128 divisors (see below), whose sum is σ = 3099559680. Its totient is φ = 358871040.

The previous prime is 1121303401. The next prime is 1121303453. The reversal of 1121303424 is 4243031211.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1121303424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054317 + ... + 1055379.

It is an arithmetic number, because the mean of its divisors is an integer number (24215310).

Almost surely, 2^1121303424 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 1121303424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549779840).

1121303424 is an abundant number, since it is smaller than the sum of its proper divisors (1978256256).

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

1121303424 is a wasteful number, since it uses less digits than its factorization.

1121303424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1121303424 is about 33485.8690196327. The cubic root of 1121303424 is about 1038.9015226114.

Adding to 1121303424 its reverse (4243031211), we get a palindrome (5364334635).

The spelling of 1121303424 in words is "one billion, one hundred twenty-one million, three hundred three thousand, four hundred twenty-four".