105123242 has 16 divisors (see below), whose sum is σ = 181963392. Its totient is φ = 44614800.

The previous prime is 105123233. The next prime is 105123269. The reversal of 105123242 is 242321501.

It is a super-2 number, since 2×105123242² = 22101792017181128, which contains 22 as substring.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35009 + ... + 37892.

It is an arithmetic number, because the mean of its divisors is an integer number (11372712).

Almost surely, 2^105123242 is an apocalyptic number.

105123242 is a deficient number, since it is larger than the sum of its proper divisors (76840150).

105123242 is a wasteful number, since it uses less digits than its factorization.

105123242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73013.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 105123242 is about 10252.9625962450. The cubic root of 105123242 is about 471.9539030200.

Adding to 105123242 its reverse (242321501), we get a palindrome (347444743).

The spelling of 105123242 in words is "one hundred five million, one hundred twenty-three thousand, two hundred forty-two".