2125843 has 4 divisors (see below), whose sum is σ = 2157640. Its totient is φ = 2094048.

The previous prime is 2125841. The next prime is 2125847. The reversal of 2125843 is 3485212.

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 2125843 - 2¹ = 2125841 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 2¹⁹ + 5⁵ + 8 + 4⁶ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15798 + ... + 15931.

It is an arithmetic number, because the mean of its divisors is an integer number (539410).

2^2125843 is an apocalyptic number.

2125843 is a deficient number, since it is larger than the sum of its proper divisors (31797).

2125843 is an equidigital number, since it uses as much as digits as its factorization.

2125843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31796.

The product of its digits is 1920, while the sum is 25.

The square root of 2125843 is about 1458.0270916550. The cubic root of 2125843 is about 128.5810779942.

The spelling of 2125843 in words is "two million, one hundred twenty-five thousand, eight hundred forty-three".