1126921284 has 36 divisors (see below), whose sum is σ = 2925599404. Its totient is φ = 365487552.

The previous prime is 1126921283. The next prime is 1126921373. The reversal of 1126921284 is 4821296211.

It can be written as a sum of positive squares in 2 ways, for example, as 800324100 + 326597184 = 28290^2 + 18072^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (1126921283) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 421687 + ... + 424350.

Almost surely, 2^1126921284 is an apocalyptic number.

It is an amenable number.

1126921284 is an abundant number, since it is smaller than the sum of its proper divisors (1798678120).

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

1126921284 is a wasteful number, since it uses less digits than its factorization.

1126921284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846084 (or 846079 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1126921284 is about 33569.6482555299. The cubic root of 1126921284 is about 1040.6336387671.

The spelling of 1126921284 in words is "one billion, one hundred twenty-six million, nine hundred twenty-one thousand, two hundred eighty-four".