105638243 has 2 divisors, whose sum is σ = 105638244. Its totient is φ = 105638242.

The previous prime is 105638231. The next prime is 105638279. The reversal of 105638243 is 342836501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105638243 - 2⁶ = 105638179 is a prime.

It is a super-2 number, since 2×105638243² = 22318876768254098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105638443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52819121 + 52819122.

It is an arithmetic number, because the mean of its divisors is an integer number (52819122).

Almost surely, 2^105638243 is an apocalyptic number.

105638243 is a deficient number, since it is larger than the sum of its proper divisors (1).

105638243 is an equidigital number, since it uses as much as digits as its factorization.

105638243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 105638243 is about 10278.0466529395. The cubic root of 105638243 is about 472.7233519410.

The spelling of 105638243 in words is "one hundred five million, six hundred thirty-eight thousand, two hundred forty-three".