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12428517041 = 61203746181
BaseRepresentation
bin10111001001100110…
…00001111010110001
31012002011110002012222
423210303001322301
5200423200021131
65413134130425
7616663436363
oct134463017261
935064402188
1012428517041
1152a8634896
1224aa350a15
131230b7c0c5
1485c8c6d33
154cb1b887b
hex2e4cc1eb1

12428517041 has 4 divisors (see below), whose sum is σ = 12632263284. Its totient is φ = 12224770800.

The previous prime is 12428516981. The next prime is 12428517067. The reversal of 12428517041 is 14071582421.

12428517041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14071582421 = 131082429417.

It can be written as a sum of positive squares in 2 ways, for example, as 833534641 + 11594982400 = 28871^2 + 107680^2 .

It is a cyclic number.

It is not a de Polignac number, because 12428517041 - 226 = 12361408177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12428516992 and 12428517010.

It is not an unprimeable number, because it can be changed into a prime (12428517841) 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 3 ways as a sum of consecutive naturals, for example, 101873030 + ... + 101873151.

It is an arithmetic number, because the mean of its divisors is an integer number (3158065821).

Almost surely, 212428517041 is an apocalyptic number.

It is an amenable number.

12428517041 is a deficient number, since it is larger than the sum of its proper divisors (203746243).

12428517041 is an equidigital number, since it uses as much as digits as its factorization.

12428517041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203746242.

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 12428517041 in words is "twelve billion, four hundred twenty-eight million, five hundred seventeen thousand, forty-one".

Divisors: 1 61 203746181 12428517041