105020243 has 2 divisors, whose sum is σ = 105020244. Its totient is φ = 105020242.

The previous prime is 105020221. The next prime is 105020249. The reversal of 105020243 is 342020501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105020243 - 2¹⁴ = 105003859 is a prime.

It is a super-2 number, since 2×105020243² = 22058502879558098, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (105020249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52510121 + 52510122.

It is an arithmetic number, because the mean of its divisors is an integer number (52510122).

Almost surely, 2^105020243 is an apocalyptic number.

105020243 is a deficient number, since it is larger than the sum of its proper divisors (1).

105020243 is an equidigital number, since it uses as much as digits as its factorization.

105020243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 105020243 is about 10247.9384756155. The cubic root of 105020243 is about 471.7997136325.

Adding to 105020243 its reverse (342020501), we get a palindrome (447040744).

The spelling of 105020243 in words is "one hundred five million, twenty thousand, two hundred forty-three".