194042105 has 4 divisors (see below), whose sum is σ = 232850532. Its totient is φ = 155233680.

The previous prime is 194042083. The next prime is 194042137. The reversal of 194042105 is 501240491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121264144 + 72777961 = 11012^2 + 8531^2 .

It is not a de Polignac number, because 194042105 - 2¹⁴ = 194025721 is a prime.

It is a Duffinian number.

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, 19404206 + ... + 19404215.

It is an arithmetic number, because the mean of its divisors is an integer number (58212633).

Almost surely, 2^194042105 is an apocalyptic number.

It is an amenable number.

194042105 is a deficient number, since it is larger than the sum of its proper divisors (38808427).

194042105 is an equidigital number, since it uses as much as digits as its factorization.

194042105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38808426.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 194042105 is about 13929.8996765949. The cubic root of 194042105 is about 578.9379146194.

Adding to 194042105 its reverse (501240491), we get a palindrome (695282596).

The spelling of 194042105 in words is "one hundred ninety-four million, forty-two thousand, one hundred five".