1121326787 has 4 divisors (see below), whose sum is σ = 1281516336. Its totient is φ = 961137240.

The previous prime is 1121326771. The next prime is 1121326837. The reversal of 1121326787 is 7876231211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1121326787 - 2⁴ = 1121326771 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121326787.

It is not an unprimeable number, because it can be changed into a prime (1121326757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80094764 + ... + 80094777.

It is an arithmetic number, because the mean of its divisors is an integer number (320379084).

Almost surely, 2^1121326787 is an apocalyptic number.

1121326787 is a deficient number, since it is larger than the sum of its proper divisors (160189549).

1121326787 is an equidigital number, since it uses as much as digits as its factorization.

1121326787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160189548.

The product of its digits is 28224, while the sum is 38.

The square root of 1121326787 is about 33486.2178664596. The cubic root of 1121326787 is about 1038.9087379310.

Adding to 1121326787 its reverse (7876231211), we get a palindrome (8997557998).

The spelling of 1121326787 in words is "one billion, one hundred twenty-one million, three hundred twenty-six thousand, seven hundred eighty-seven".