105422217842 has 6 divisors (see below), whose sum is σ = 158134015533. Its totient is φ = 52710879332.

The previous prime is 105422217751. The next prime is 105422217851. The reversal of 105422217842 is 248712224501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 105416453041 + 5764801 = 324679^2 + 2401^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=229589.

It is a super-2 number, since 2×105422217842² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105422217796 and 105422217805.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 344384 + ... + 573972.

Almost surely, 2^105422217842 is an apocalyptic number.

105422217842 is a deficient number, since it is larger than the sum of its proper divisors (52711797691).

105422217842 is an frugal number, since it uses more digits than its factorization.

105422217842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459180 (or 229591 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The spelling of 105422217842 in words is "one hundred five billion, four hundred twenty-two million, two hundred seventeen thousand, eight hundred forty-two".