105215320042 has 128 divisors (see below), whose sum is σ = 192826884096. Its totient is φ = 42120000000.

The previous prime is 105215320039. The next prime is 105215320061. The reversal of 105215320042 is 240023512501.

It is a super-2 number, since 2×105215320042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105215319989 and 105215320016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 419184417 + ... + 419184667.

It is an arithmetic number, because the mean of its divisors is an integer number (1506460032).

Almost surely, 2^105215320042 is an apocalyptic number.

105215320042 is a deficient number, since it is larger than the sum of its proper divisors (87611564054).

105215320042 is a wasteful number, since it uses less digits than its factorization.

105215320042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 105215320042 its reverse (240023512501), we get a palindrome (345238832543).

The spelling of 105215320042 in words is "one hundred five billion, two hundred fifteen million, three hundred twenty thousand, forty-two".