105724271 has 4 divisors (see below), whose sum is σ = 106397832. Its totient is φ = 105050712.

The previous prime is 105724253. The next prime is 105724273. The reversal of 105724271 is 172427501.

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 105724271 - 2²⁶ = 38615407 is a prime.

It is a super-2 number, since 2×105724271² = 22355242956962882, 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 (105724273) 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, 336545 + ... + 336858.

It is an arithmetic number, because the mean of its divisors is an integer number (26599458).

Almost surely, 2^105724271 is an apocalyptic number.

105724271 is a deficient number, since it is larger than the sum of its proper divisors (673561).

105724271 is an equidigital number, since it uses as much as digits as its factorization.

105724271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673560.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 105724271 is about 10282.2308377122. The cubic root of 105724271 is about 472.8516401095.

The spelling of 105724271 in words is "one hundred five million, seven hundred twenty-four thousand, two hundred seventy-one".