105105145 has 8 divisors (see below), whose sum is σ = 127375560. Its totient is φ = 83251200.

The previous prime is 105105109. The next prime is 105105163. The reversal of 105105145 is 541501501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9437184 + 95667961 = 3072^2 + 9781^2 .

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

It is not a de Polignac number, because 105105145 - 2⁹ = 105104633 is a prime.

It is a super-2 number, since 2×105105145² = 22094183010942050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103560 + ... + 104569.

It is an arithmetic number, because the mean of its divisors is an integer number (15921945).

Almost surely, 2^105105145 is an apocalyptic number.

It is an amenable number.

105105145 is a deficient number, since it is larger than the sum of its proper divisors (22270415).

105105145 is a wasteful number, since it uses less digits than its factorization.

105105145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208235.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 105105145 is about 10252.0800328519. The cubic root of 105105145 is about 471.9268191269.

Adding to 105105145 its reverse (541501501), we get a palindrome (646606646).

The spelling of 105105145 in words is "one hundred five million, one hundred five thousand, one hundred forty-five".