12106243 has 4 divisors (see below), whose sum is σ = 12304768. Its totient is φ = 11907720.

The previous prime is 12106231. The next prime is 12106271. The reversal of 12106243 is 34260121.

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 12106243 - 2²¹ = 10009091 is a prime.

It is a super-2 number, since 2×12106243² = 293122239150098, which contains 22 as substring.

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 12106243.

It is not an unprimeable number, because it can be changed into a prime (12106223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99171 + ... + 99292.

It is an arithmetic number, because the mean of its divisors is an integer number (3076192).

Almost surely, 2^12106243 is an apocalyptic number.

12106243 is a deficient number, since it is larger than the sum of its proper divisors (198525).

12106243 is an equidigital number, since it uses as much as digits as its factorization.

12106243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198524.

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

The square root of 12106243 is about 3479.4026786217. The cubic root of 12106243 is about 229.6165191346.

Adding to 12106243 its reverse (34260121), we get a palindrome (46366364).

The spelling of 12106243 in words is "twelve million, one hundred six thousand, two hundred forty-three".