2140111243 has 2 divisors, whose sum is σ = 2140111244. Its totient is φ = 2140111242.

The previous prime is 2140111223. The next prime is 2140111277. The reversal of 2140111243 is 3421110412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140111243 is a prime.

It is a super-2 number, since 2×2140111243² = 9160152264830010098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2140111243.

It is not a weakly prime, because it can be changed into another prime (2140111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070055621 + 1070055622.

It is an arithmetic number, because the mean of its divisors is an integer number (1070055622).

Almost surely, 2^2140111243 is an apocalyptic number.

2140111243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140111243 is an equidigital number, since it uses as much as digits as its factorization.

2140111243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2140111243 is about 46261.3363728287. The cubic root of 2140111243 is about 1288.6810714799.

Adding to 2140111243 its reverse (3421110412), we get a palindrome (5561221655).

The spelling of 2140111243 in words is "two billion, one hundred forty million, one hundred eleven thousand, two hundred forty-three".