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12745141 = 19366037
BaseRepresentation
bin110000100111…
…100110110101
3212222112001021
4300213212311
511230321031
61133101141
7213221563
oct60474665
925875037
1012745141
117215682
1243277b1
132843206
14199aa33
1511bb511
hexc279b5

12745141 has 4 divisors (see below), whose sum is σ = 12811372. Its totient is φ = 12678912.

The previous prime is 12745127. The next prime is 12745147. The reversal of 12745141 is 14154721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14154721 = 72022103.

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 5044516 = 2775^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 12745141 - 29 = 12744629 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 (12745147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32826 + ... + 33211.

It is an arithmetic number, because the mean of its divisors is an integer number (3202843).

Almost surely, 212745141 is an apocalyptic number.

It is an amenable number.

12745141 is a deficient number, since it is larger than the sum of its proper divisors (66231).

12745141 is an equidigital number, since it uses as much as digits as its factorization.

12745141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66230.

The product of its digits is 1120, while the sum is 25.

The square root of 12745141 is about 3570.0337533418. The cubic root of 12745141 is about 233.5867557251.

Adding to 12745141 its reverse (14154721), we get a palindrome (26899862).

The spelling of 12745141 in words is "twelve million, seven hundred forty-five thousand, one hundred forty-one".

Divisors: 1 193 66037 12745141