105520423 has 4 divisors (see below), whose sum is σ = 107250328. Its totient is φ = 103790520.

The previous prime is 105520421. The next prime is 105520451. The reversal of 105520423 is 324025501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324025501 = 41 ⋅7903061.

It is a cyclic number.

It is not a de Polignac number, because 105520423 - 2¹ = 105520421 is a prime.

It is a super-2 number, since 2×105520423² = 22269119340197858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105520394 and 105520403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105520421) 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, 864861 + ... + 864982.

It is an arithmetic number, because the mean of its divisors is an integer number (26812582).

Almost surely, 2^105520423 is an apocalyptic number.

105520423 is a deficient number, since it is larger than the sum of its proper divisors (1729905).

105520423 is an equidigital number, since it uses as much as digits as its factorization.

105520423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729904.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 105520423 is about 10272.3134200627. The cubic root of 105520423 is about 472.5475412911.

Adding to 105520423 its reverse (324025501), we get a palindrome (429545924).

The spelling of 105520423 in words is "one hundred five million, five hundred twenty thousand, four hundred twenty-three".