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12660141 = 313324619
BaseRepresentation
bin110000010010…
…110110101101
3212211012110010
4300102312231
511220111031
61131203433
7212416014
oct60226655
925735403
1012660141
11716782a
1242a6579
132813610
141977a7b
1511a1246
hexc12dad

12660141 has 8 divisors (see below), whose sum is σ = 18178720. Its totient is φ = 7790832.

The previous prime is 12660139. The next prime is 12660157. The reversal of 12660141 is 14106621.

12660141 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12660141 - 21 = 12660139 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162271 + ... + 162348.

It is an arithmetic number, because the mean of its divisors is an integer number (2272340).

Almost surely, 212660141 is an apocalyptic number.

It is an amenable number.

12660141 is a deficient number, since it is larger than the sum of its proper divisors (5518579).

12660141 is a wasteful number, since it uses less digits than its factorization.

12660141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324635.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12660141 is about 3558.1091888811. The cubic root of 12660141 is about 233.0663174584.

Adding to 12660141 its reverse (14106621), we get a palindrome (26766762).

The spelling of 12660141 in words is "twelve million, six hundred sixty thousand, one hundred forty-one".

Divisors: 1 3 13 39 324619 973857 4220047 12660141