1121380943 has 16 divisors (see below), whose sum is σ = 1184440320. Its totient is φ = 1060584096.

The previous prime is 1121380937. The next prime is 1121380951. The reversal of 1121380943 is 3490831211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121380943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121380913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163538 + ... + 170256.

It is an arithmetic number, because the mean of its divisors is an integer number (74027520).

Almost surely, 2^1121380943 is an apocalyptic number.

1121380943 is a deficient number, since it is larger than the sum of its proper divisors (63059377).

1121380943 is an equidigital number, since it uses as much as digits as its factorization.

1121380943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1121380943 is about 33487.0264878803. The cubic root of 1121380943 is about 1038.9254628312.

The spelling of 1121380943 in words is "one billion, one hundred twenty-one million, three hundred eighty thousand, nine hundred forty-three".