105276109 has 8 divisors (see below), whose sum is σ = 106191000. Its totient is φ = 104365632.

The previous prime is 105276103. The next prime is 105276113. The reversal of 105276109 is 901672501.

It can be written as a sum of positive squares in 4 ways, for example, as 5076009 + 100200100 = 2253^2 + 10010^2 .

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 105276109 - 2⁵ = 105276077 is a prime.

It is a super-2 number, since 2×105276109² = 22166118252359762, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105276103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60747 + ... + 62455.

It is an arithmetic number, because the mean of its divisors is an integer number (13273875).

Almost surely, 2^105276109 is an apocalyptic number.

It is an amenable number.

105276109 is a deficient number, since it is larger than the sum of its proper divisors (914891).

105276109 is a wasteful number, since it uses less digits than its factorization.

105276109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 105276109 is about 10260.4146602367. The cubic root of 105276109 is about 472.1825591929.

The spelling of 105276109 in words is "one hundred five million, two hundred seventy-six thousand, one hundred nine".