105243539 has 2 divisors, whose sum is σ = 105243540. Its totient is φ = 105243538.

The previous prime is 105243529. The next prime is 105243553. The reversal of 105243539 is 935342501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105243539 - 2⁸ = 105243283 is a prime.

It is a super-2 number, since 2×105243539² = 22152405002489042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105243529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52621769 + 52621770.

It is an arithmetic number, because the mean of its divisors is an integer number (52621770).

Almost surely, 2^105243539 is an apocalyptic number.

105243539 is a deficient number, since it is larger than the sum of its proper divisors (1).

105243539 is an equidigital number, since it uses as much as digits as its factorization.

105243539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 105243539 is about 10258.8273696364. The cubic root of 105243539 is about 472.1338600393.

The spelling of 105243539 in words is "one hundred five million, two hundred forty-three thousand, five hundred thirty-nine".