105730121 has 8 divisors (see below), whose sum is σ = 121042944. Its totient is φ = 90469440.

The previous prime is 105730111. The next prime is 105730129. The reversal of 105730121 is 121037501.

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

It is a cyclic number.

It is not a de Polignac number, because 105730121 - 2¹⁸ = 105467977 is a prime.

It is a super-2 number, since 2×105730121² = 22357716973349282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105730093 and 105730102.

It is not an unprimeable number, because it can be changed into a prime (105730129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8585 + ... + 16886.

It is an arithmetic number, because the mean of its divisors is an integer number (15130368).

Almost surely, 2^105730121 is an apocalyptic number.

It is an amenable number.

105730121 is a deficient number, since it is larger than the sum of its proper divisors (15312823).

105730121 is an equidigital number, since it uses as much as digits as its factorization.

105730121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26071.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 105730121 is about 10282.5153051187. The cubic root of 105730121 is about 472.8603613206.

Adding to 105730121 its reverse (121037501), we get a palindrome (226767622).

The spelling of 105730121 in words is "one hundred five million, seven hundred thirty thousand, one hundred twenty-one".