105444242 has 18 divisors (see below), whose sum is σ = 162392223. Its totient is φ = 51349792.

The previous prime is 105444233. The next prime is 105444253. The reversal of 105444242 is 242444501.

It can be written as a sum of positive squares in 5 ways, for example, as 83923921 + 21520321 = 9161^2 + 4639^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=7261.

It is a super-2 number, since 2×105444242² = 22236976341909128, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 769598 + ... + 769734.

Almost surely, 2^105444242 is an apocalyptic number.

105444242 is a deficient number, since it is larger than the sum of its proper divisors (56947981).

105444242 is an frugal number, since it uses more digits than its factorization.

105444242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 105444242 is about 10268.6046763910. The cubic root of 105444242 is about 472.4337945554.

Adding to 105444242 its reverse (242444501), we get a palindrome (347888743).

The spelling of 105444242 in words is "one hundred five million, four hundred forty-four thousand, two hundred forty-two".