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12842741 = 16997559
BaseRepresentation
bin110000111111…
…011011110101
3220011110221002
4300333123311
511241431431
61135133045
7214106252
oct60773365
926143832
1012842741
117281a3a
124374185
132878772
1419c4429
1511da3cb
hexc3f6f5

12842741 has 4 divisors (see below), whose sum is σ = 12852000. Its totient is φ = 12833484.

The previous prime is 12842729. The next prime is 12842771. The reversal of 12842741 is 14724821.

12842741 is digitally balanced in base 3, 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 a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12842741 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 (12842771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081 + ... + 5478.

It is an arithmetic number, because the mean of its divisors is an integer number (3213000).

Almost surely, 212842741 is an apocalyptic number.

It is an amenable number.

12842741 is a deficient number, since it is larger than the sum of its proper divisors (9259).

12842741 is an equidigital number, since it uses as much as digits as its factorization.

12842741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9258.

The product of its digits is 3584, while the sum is 29.

The square root of 12842741 is about 3583.6770222775. The cubic root of 12842741 is about 234.1814952989.

The spelling of 12842741 in words is "twelve million, eight hundred forty-two thousand, seven hundred forty-one".

Divisors: 1 1699 7559 12842741