1121285376 has 144 divisors (see below), whose sum is σ = 3423454720. Its totient is φ = 361635840.

The previous prime is 1121285369. The next prime is 1121285387. The reversal of 1121285376 is 6735821211.

1121285376 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 285 + 376 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1121285376² = 2514561788862922752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1121285376.

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, 211656 + ... + 216888.

Almost surely, 2^1121285376 is an apocalyptic number.

1121285376 is a gapful number since it is divisible by the number (16) 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 1121285376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1711727360).

1121285376 is an abundant number, since it is smaller than the sum of its proper divisors (2302169344).

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

1121285376 is an equidigital number, since it uses as much as digits as its factorization.

1121285376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289 (or 5269 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1121285376 is about 33485.5995317390. The cubic root of 1121285376 is about 1038.8959486829.

The spelling of 1121285376 in words is "one billion, one hundred twenty-one million, two hundred eighty-five thousand, three hundred seventy-six".