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10205143 = 131136947
BaseRepresentation
bin100110111011…
…011111010111
3201012110211021
4212323133113
510103031033
61002422011
7152512414
oct46733727
921173737
1010205143
115840303
123501907
132164060
1414d910b
15d68b2d
hex9bb7d7

10205143 has 8 divisors (see below), whose sum is σ = 11089008. Its totient is φ = 9335424.

The previous prime is 10205119. The next prime is 10205161. The reversal of 10205143 is 34150201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10205143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10205113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005 + ... + 4942.

It is an arithmetic number, because the mean of its divisors is an integer number (1386126).

Almost surely, 210205143 is an apocalyptic number.

10205143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10205143 is a deficient number, since it is larger than the sum of its proper divisors (883865).

10205143 is a wasteful number, since it uses less digits than its factorization.

10205143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 10205143 is about 3194.5489509475. The cubic root of 10205143 is about 216.9067322010.

Adding to 10205143 its reverse (34150201), we get a palindrome (44355344).

The spelling of 10205143 in words is "ten million, two hundred five thousand, one hundred forty-three".

Divisors: 1 13 113 1469 6947 90311 785011 10205143