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12705141 = 36169427
BaseRepresentation
bin110000011101…
…110101110101
3212220111011210
4300131311311
511223031031
61132152033
7212664141
oct60356565
925814153
1012705141
117198619
124308619
13282ac47
14198a221
1511ae746
hexc1dd75

12705141 has 8 divisors (see below), whose sum is σ = 17218144. Its totient is φ = 8331120.

The previous prime is 12705127. The next prime is 12705163. The reversal of 12705141 is 14150721.

It is a happy number.

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

It is not a de Polignac number, because 12705141 - 25 = 12705109 is a prime.

It is a super-2 number, since 2×127051412 = 322841215659762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705101) 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, 34531 + ... + 34896.

It is an arithmetic number, because the mean of its divisors is an integer number (2152268).

Almost surely, 212705141 is an apocalyptic number.

It is an amenable number.

12705141 is a deficient number, since it is larger than the sum of its proper divisors (4513003).

12705141 is an equidigital number, since it uses as much as digits as its factorization.

12705141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69491.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 12705141 is about 3564.4271629534. The cubic root of 12705141 is about 233.3421327747.

Adding to 12705141 its reverse (14150721), we get a palindrome (26855862).

The spelling of 12705141 in words is "twelve million, seven hundred five thousand, one hundred forty-one".

Divisors: 1 3 61 183 69427 208281 4235047 12705141