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12727141 = 71818163
BaseRepresentation
bin110000100011…
…001101100101
3212221121100121
4300203031211
511224232031
61132441541
7213115240
oct60431545
925847317
1012727141
1172030a9
1243192b1
132837c6b
141994257
1511b6011
hexc23365

12727141 has 4 divisors (see below), whose sum is σ = 14545312. Its totient is φ = 10908972.

The previous prime is 12727139. The next prime is 12727147. The reversal of 12727141 is 14172721.

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.

It is a cyclic number.

It is not a de Polignac number, because 12727141 - 21 = 12727139 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 (12727147) 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, 909075 + ... + 909088.

It is an arithmetic number, because the mean of its divisors is an integer number (3636328).

Almost surely, 212727141 is an apocalyptic number.

It is an amenable number.

12727141 is a deficient number, since it is larger than the sum of its proper divisors (1818171).

12727141 is an equidigital number, since it uses as much as digits as its factorization.

12727141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818170.

The product of its digits is 784, while the sum is 25.

The square root of 12727141 is about 3567.5118780461. The cubic root of 12727141 is about 233.4767388298.

Adding to 12727141 its reverse (14172721), we get a palindrome (26899862).

The spelling of 12727141 in words is "twelve million, seven hundred twenty-seven thousand, one hundred forty-one".

Divisors: 1 7 1818163 12727141