105240223442 has 4 divisors (see below), whose sum is σ = 157860335166. Its totient is φ = 52620111720.

The previous prime is 105240223421. The next prime is 105240223513. The reversal of 105240223442 is 244322042501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80082774121 + 25157449321 = 282989^2 + 158611^2 .

It is a super-2 number, since 2×105240223442² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26310055859 + ... + 26310055862.

Almost surely, 2^105240223442 is an apocalyptic number.

105240223442 is a deficient number, since it is larger than the sum of its proper divisors (52620111724).

105240223442 is an equidigital number, since it uses as much as digits as its factorization.

105240223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52620111723.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 105240223442 its reverse (244322042501), we get a palindrome (349562265943).

The spelling of 105240223442 in words is "one hundred five billion, two hundred forty million, two hundred twenty-three thousand, four hundred forty-two".