105120271 has 4 divisors (see below), whose sum is σ = 105147792. Its totient is φ = 105092752.

The previous prime is 105120259. The next prime is 105120277. The reversal of 105120271 is 172021501.

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

It is a cyclic number.

It is not a de Polignac number, because 105120271 - 2¹⁹ = 104595983 is a prime.

It is a super-2 number, since 2×105120271² = 22100542750226882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105120277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6886 + ... + 16051.

It is an arithmetic number, because the mean of its divisors is an integer number (26286948).

Almost surely, 2^105120271 is an apocalyptic number.

105120271 is a deficient number, since it is larger than the sum of its proper divisors (27521).

105120271 is an equidigital number, since it uses as much as digits as its factorization.

105120271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27520.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 105120271 is about 10252.8177102687. The cubic root of 105120271 is about 471.9494568473.

Adding to 105120271 its reverse (172021501), we get a palindrome (277141772).

The spelling of 105120271 in words is "one hundred five million, one hundred twenty thousand, two hundred seventy-one".