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12710105 = 52542021
BaseRepresentation
bin110000011111…
…000011011001
3212220201222122
4300133003121
511223210410
61132231025
7213014462
oct60370331
925821878
1012710105
1171a1321
12430b475
132830295
14198bd69
1511b0e55
hexc1f0d9

12710105 has 4 divisors (see below), whose sum is σ = 15252132. Its totient is φ = 10168080.

The previous prime is 12710083. The next prime is 12710119. The reversal of 12710105 is 50101721.

12710105 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: 50101721 = 79634199.

It can be written as a sum of positive squares in 2 ways, for example, as 5798464 + 6911641 = 2408^2 + 2629^2 .

It is not a de Polignac number, because 12710105 - 212 = 12706009 is a prime.

It is a super-2 number, since 2×127101052 = 323093538222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271006 + ... + 1271015.

It is an arithmetic number, because the mean of its divisors is an integer number (3813033).

Almost surely, 212710105 is an apocalyptic number.

It is an amenable number.

12710105 is a deficient number, since it is larger than the sum of its proper divisors (2542027).

12710105 is an equidigital number, since it uses as much as digits as its factorization.

12710105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542026.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 12710105 is about 3565.1234200235. The cubic root of 12710105 is about 233.3725183624.

Adding to 12710105 its reverse (50101721), we get a palindrome (62811826).

The spelling of 12710105 in words is "twelve million, seven hundred ten thousand, one hundred five".

Divisors: 1 5 2542021 12710105