2116243 has 4 divisors (see below), whose sum is σ = 2119720. Its totient is φ = 2112768.

The previous prime is 2116199. The next prime is 2116291. The reversal of 2116243 is 3426112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116243 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 1 + 1 + 6 + 2²¹ + 4⁷ + 3⁷ .

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 2116243.

It is not an unprimeable number, because it can be changed into a prime (2114243) 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, 558 + ... + 2131.

It is an arithmetic number, because the mean of its divisors is an integer number (529930).

2^2116243 is an apocalyptic number.

2116243 is a deficient number, since it is larger than the sum of its proper divisors (3477).

2116243 is an equidigital number, since it uses as much as digits as its factorization.

2116243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476.

The product of its digits is 288, while the sum is 19.

The square root of 2116243 is about 1454.7312466569. The cubic root of 2116243 is about 128.3872347179.

The spelling of 2116243 in words is "two million, one hundred sixteen thousand, two hundred forty-three".