105012503 has 4 divisors (see below), whose sum is σ = 109578288. Its totient is φ = 100446720.

The previous prime is 105012473. The next prime is 105012529. The reversal of 105012503 is 305210501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305210501 = 139 ⋅2195759.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105012503 is a prime.

It is a super-2 number, since 2×105012503² = 22055251572650018, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105012203) 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, 2282858 + ... + 2282903.

It is an arithmetic number, because the mean of its divisors is an integer number (27394572).

Almost surely, 2^105012503 is an apocalyptic number.

105012503 is a deficient number, since it is larger than the sum of its proper divisors (4565785).

105012503 is an equidigital number, since it uses as much as digits as its factorization.

105012503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565784.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 105012503 is about 10247.5608317297. The cubic root of 105012503 is about 471.7881227893.

The spelling of 105012503 in words is "one hundred five million, twelve thousand, five hundred three".