105125243 has 4 divisors (see below), whose sum is σ = 105304920. Its totient is φ = 104945568.

The previous prime is 105125219. The next prime is 105125257. The reversal of 105125243 is 342521501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105125243 - 2¹² = 105121147 is a prime.

It is a super-2 number, since 2×105125243² = 22102633431618098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105125213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88958 + ... + 90131.

It is an arithmetic number, because the mean of its divisors is an integer number (26326230).

Almost surely, 2^105125243 is an apocalyptic number.

105125243 is a deficient number, since it is larger than the sum of its proper divisors (179677).

105125243 is an equidigital number, since it uses as much as digits as its factorization.

105125243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179676.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 105125243 is about 10253.0601773324. The cubic root of 105125243 is about 471.9568975172.

Adding to 105125243 its reverse (342521501), we get a palindrome (447646744).

The spelling of 105125243 in words is "one hundred five million, one hundred twenty-five thousand, two hundred forty-three".