105123202543 has 2 divisors, whose sum is σ = 105123202544. Its totient is φ = 105123202542.

The previous prime is 105123202537. The next prime is 105123202571. The reversal of 105123202543 is 345202321501.

It is an a-pointer prime, because the next prime (105123202571) can be obtained adding 105123202543 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105123202543 - 2⁵ = 105123202511 is a prime.

It is a super-2 number, since 2×105123202543² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105123202343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52561601271 + 52561601272.

It is an arithmetic number, because the mean of its divisors is an integer number (52561601272).

Almost surely, 2^105123202543 is an apocalyptic number.

105123202543 is a deficient number, since it is larger than the sum of its proper divisors (1).

105123202543 is an equidigital number, since it uses as much as digits as its factorization.

105123202543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 105123202543 in words is "one hundred five billion, one hundred twenty-three million, two hundred two thousand, five hundred forty-three".