105642271 has 8 divisors (see below), whose sum is σ = 123542144. Its totient is φ = 88444440.

The previous prime is 105642241. The next prime is 105642287. The reversal of 105642271 is 172246501.

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

It is not a de Polignac number, because 105642271 - 2¹³ = 105634079 is a prime.

It is a super-2 number, since 2×105642271² = 22320578844074882, 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 (105642211) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 175185 + ... + 175786.

It is an arithmetic number, because the mean of its divisors is an integer number (15442768).

Almost surely, 2^105642271 is an apocalyptic number.

105642271 is a deficient number, since it is larger than the sum of its proper divisors (17899873).

105642271 is an equidigital number, since it uses as much as digits as its factorization.

105642271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351021.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 105642271 is about 10278.2426027021. The cubic root of 105642271 is about 472.7293601990.

Adding to 105642271 its reverse (172246501), we get a palindrome (277888772).

The spelling of 105642271 in words is "one hundred five million, six hundred forty-two thousand, two hundred seventy-one".