2126243 has 4 divisors (see below), whose sum is σ = 2430000. Its totient is φ = 1822488.

The previous prime is 2126227. The next prime is 2126249. The reversal of 2126243 is 3426212.

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 2126243 - 2⁴ = 2126227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126249) 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, 151868 + ... + 151881.

It is an arithmetic number, because the mean of its divisors is an integer number (607500).

2^2126243 is an apocalyptic number.

2126243 is a deficient number, since it is larger than the sum of its proper divisors (303757).

2126243 is an equidigital number, since it uses as much as digits as its factorization.

2126243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303756.

The product of its digits is 576, while the sum is 20.

The square root of 2126243 is about 1458.1642568655. The cubic root of 2126243 is about 128.5891421215.

The spelling of 2126243 in words is "two million, one hundred twenty-six thousand, two hundred forty-three".