105340042 has 4 divisors (see below), whose sum is σ = 158010066. Its totient is φ = 52670020.

The previous prime is 105340021. The next prime is 105340063. The reversal of 105340042 is 240043501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240043501 = 43 ⋅5582407.

It is an interprime number because it is at equal distance from previous prime (105340021) and next prime (105340063).

It can be written as a sum of positive squares in only one way, i.e., 103002201 + 2337841 = 10149^2 + 1529^2 .

It is a super-2 number, since 2×105340042² = 22193048897123528, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 26335009 + ... + 26335012.

Almost surely, 2^105340042 is an apocalyptic number.

105340042 is a deficient number, since it is larger than the sum of its proper divisors (52670024).

105340042 is an equidigital number, since it uses as much as digits as its factorization.

105340042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52670023.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 105340042 is about 10263.5297047361. The cubic root of 105340042 is about 472.2781235742.

Adding to 105340042 its reverse (240043501), we get a palindrome (345383543).

The spelling of 105340042 in words is "one hundred five million, three hundred forty thousand, forty-two".