2126843 has 4 divisors (see below), whose sum is σ = 2132088. Its totient is φ = 2121600.

The previous prime is 2126827. The next prime is 2126849. The reversal of 2126843 is 3486212.

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 2126843 - 2⁴ = 2126827 is a prime.

It is a super-2 number, since 2×2126843² = 9046922293298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126849) 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 3 ways as a sum of consecutive naturals, for example, 1958 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (533022).

2^2126843 is an apocalyptic number.

2126843 is a deficient number, since it is larger than the sum of its proper divisors (5245).

2126843 is an equidigital number, since it uses as much as digits as its factorization.

2126843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5244.

The product of its digits is 2304, while the sum is 26.

The square root of 2126843 is about 1458.3699804919. The cubic root of 2126843 is about 128.6012364163.

The spelling of 2126843 in words is "two million, one hundred twenty-six thousand, eight hundred forty-three".