105020345 has 16 divisors (see below), whose sum is σ = 129372672. Its totient is φ = 81812160.

The previous prime is 105020299. The next prime is 105020387. The reversal of 105020345 is 543020501.

It is not a de Polignac number, because 105020345 - 2¹⁴ = 105003961 is a prime.

It is a super-2 number, since 2×105020345² = 22058545727838050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29744 + ... + 33086.

It is an arithmetic number, because the mean of its divisors is an integer number (8085792).

Almost surely, 2^105020345 is an apocalyptic number.

It is an amenable number.

105020345 is a deficient number, since it is larger than the sum of its proper divisors (24352327).

105020345 is a wasteful number, since it uses less digits than its factorization.

105020345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 105020345 is about 10247.9434522249. The cubic root of 105020345 is about 471.7998663763.

Adding to 105020345 its reverse (543020501), we get a palindrome (648040846).

The spelling of 105020345 in words is "one hundred five million, twenty thousand, three hundred forty-five".