105405442 has 8 divisors (see below), whose sum is σ = 158738832. Its totient is φ = 52492500.

The previous prime is 105405409. The next prime is 105405463. The reversal of 105405442 is 244504501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105405442² = 22220614406430728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104484 + ... + 105487.

It is an arithmetic number, because the mean of its divisors is an integer number (19842354).

Almost surely, 2^105405442 is an apocalyptic number.

105405442 is a deficient number, since it is larger than the sum of its proper divisors (53333390).

105405442 is a wasteful number, since it uses less digits than its factorization.

105405442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210224.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 105405442 is about 10266.7152488028. The cubic root of 105405442 is about 472.3758407666.

Adding to 105405442 its reverse (244504501), we get a palindrome (349909943).

The spelling of 105405442 in words is "one hundred five million, four hundred five thousand, four hundred forty-two".