1121305504 has 48 divisors (see below), whose sum is σ = 2426741856. Its totient is φ = 505772800.

The previous prime is 1121305481. The next prime is 1121305511. The reversal of 1121305504 is 4055031211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 7 ways as a sum of consecutive naturals, for example, 33954 + ... + 58270.

It is an arithmetic number, because the mean of its divisors is an integer number (50557122).

Almost surely, 2^1121305504 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 1121305504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1213370928).

1121305504 is an abundant number, since it is smaller than the sum of its proper divisors (1305436352).

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

1121305504 is a wasteful number, since it uses less digits than its factorization.

1121305504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24469 (or 24461 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1121305504 is about 33485.9000774953. The cubic root of 1121305504 is about 1038.9021649929.

Adding to 1121305504 its reverse (4055031211), we get a palindrome (5176336715).

The spelling of 1121305504 in words is "one billion, one hundred twenty-one million, three hundred five thousand, five hundred four".