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105287041 = 613171757
BaseRepresentation
bin1100100011010…
…00110110000001
321100010010200001
412101220312001
5203423141131
614240400001
72415632206
oct621506601
9240103601
10105287041
1154482792
122b316001
1318a75132
14dda9cad
15939b261
hex6468d81

105287041 has 4 divisors (see below), whose sum is σ = 105459412. Its totient is φ = 105114672.

The previous prime is 105287033. The next prime is 105287059. The reversal of 105287041 is 140782501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50822641 + 54464400 = 7129^2 + 7380^2 .

It is a cyclic number.

It is not a de Polignac number, because 105287041 - 23 = 105287033 is a prime.

It is a super-2 number, since 2×1052870412 = 22170722005071362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105287071) 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 3 ways as a sum of consecutive naturals, for example, 85266 + ... + 86491.

It is an arithmetic number, because the mean of its divisors is an integer number (26364853).

Almost surely, 2105287041 is an apocalyptic number.

It is an amenable number.

105287041 is a deficient number, since it is larger than the sum of its proper divisors (172371).

105287041 is an equidigital number, since it uses as much as digits as its factorization.

105287041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172370.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 105287041 is about 10260.9473734154. The cubic root of 105287041 is about 472.1989026321.

The spelling of 105287041 in words is "one hundred five million, two hundred eighty-seven thousand, forty-one".

Divisors: 1 613 171757 105287041