1121428480 has 176 divisors, whose sum is σ = 2865144960. Its totient is φ = 420282368.

The previous prime is 1121428459. The next prime is 1121428499. The reversal of 1121428480 is 848241211.

It is a super-2 number, since 2×1121428480² = 2515203671510220800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10480587 + ... + 10480693.

Almost surely, 2^1121428480 is an apocalyptic number.

1121428480 is a gapful number since it is divisible by the number (10) 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 1121428480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432572480).

1121428480 is an abundant number, since it is smaller than the sum of its proper divisors (1743716480).

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

1121428480 is a wasteful number, since it uses less digits than its factorization.

1121428480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 1121428480 is about 33487.7362626977. The cubic root of 1121428480 is about 1038.9401431538.

Adding to 1121428480 its reverse (848241211), we get a palindrome (1969669691).

The spelling of 1121428480 in words is "one billion, one hundred twenty-one million, four hundred twenty-eight thousand, four hundred eighty".