1121023984 has 40 divisors (see below), whose sum is σ = 2263918592. Its totient is φ = 537140160.

The previous prime is 1121023973. The next prime is 1121023987. The reversal of 1121023984 is 4893201211.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121023987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40117 + ... + 62059.

Almost surely, 2^1121023984 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 1121023984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131959296).

1121023984 is an abundant number, since it is smaller than the sum of its proper divisors (1142894608).

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

1121023984 is a wasteful number, since it uses less digits than its factorization.

1121023984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22085 (or 22079 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1121023984 is about 33481.6962533262. The cubic root of 1121023984 is about 1038.8152139000.

The spelling of 1121023984 in words is "one billion, one hundred twenty-one million, twenty-three thousand, nine hundred eighty-four".