2126744843 has 4 divisors (see below), whose sum is σ = 2155878408. Its totient is φ = 2097611280.

The previous prime is 2126744831. The next prime is 2126744861. The reversal of 2126744843 is 3484476212.

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

It is a cyclic number.

It is not a de Polignac number, because 2126744843 - 2⁴ = 2126744827 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 2126744843.

It is not an unprimeable number, because it can be changed into a prime (2126744813) 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 3 ways as a sum of consecutive naturals, for example, 14566673 + ... + 14566818.

It is an arithmetic number, because the mean of its divisors is an integer number (538969602).

Almost surely, 2^2126744843 is an apocalyptic number.

2126744843 is a deficient number, since it is larger than the sum of its proper divisors (29133565).

2126744843 is an equidigital number, since it uses as much as digits as its factorization.

2126744843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29133564.

The product of its digits is 258048, while the sum is 41.

The square root of 2126744843 is about 46116.6438826591. The cubic root of 2126744843 is about 1285.9925800578.

The spelling of 2126744843 in words is "two billion, one hundred twenty-six million, seven hundred forty-four thousand, eight hundred forty-three".