105840214 has 4 divisors (see below), whose sum is σ = 158760324. Its totient is φ = 52920106.

The previous prime is 105840191. The next prime is 105840233. The reversal of 105840214 is 412048501.

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

It is a super-2 number, since 2×105840214² = 22404301799131592, which contains 22 as substring.

It is a congruent number.

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, 26460052 + ... + 26460055.

It is an arithmetic number, because the mean of its divisors is an integer number (39690081).

Almost surely, 2^105840214 is an apocalyptic number.

105840214 is a deficient number, since it is larger than the sum of its proper divisors (52920110).

105840214 is an equidigital number, since it uses as much as digits as its factorization.

105840214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52920109.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 105840214 is about 10287.8673202953. The cubic root of 105840214 is about 473.0244285917.

Adding to 105840214 its reverse (412048501), we get a palindrome (517888715).

The spelling of 105840214 in words is "one hundred five million, eight hundred forty thousand, two hundred fourteen".