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12143411 = 78212113
BaseRepresentation
bin101110010100…
…101100110011
3211211221121222
4232110230303
511102042121
61112135255
7205134350
oct56245463
924757558
1012143411
116944585
12409752b
132692367
141881627
1510ed0ab
hexb94b33

12143411 has 8 divisors (see below), whose sum is σ = 13901664. Its totient is φ = 10391040.

The previous prime is 12143407. The next prime is 12143429. The reversal of 12143411 is 11434121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12143411 - 22 = 12143407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12143411.

It is not an unprimeable number, because it can be changed into a prime (12143441) 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 7 ways as a sum of consecutive naturals, for example, 4691 + ... + 6803.

It is an arithmetic number, because the mean of its divisors is an integer number (1737708).

Almost surely, 212143411 is an apocalyptic number.

12143411 is a deficient number, since it is larger than the sum of its proper divisors (1758253).

12143411 is an equidigital number, since it uses as much as digits as its factorization.

12143411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941.

The product of its digits is 96, while the sum is 17.

The square root of 12143411 is about 3484.7397320316. The cubic root of 12143411 is about 229.8512648962.

Adding to 12143411 its reverse (11434121), we get a palindrome (23577532).

It can be divided in two parts, 1 and 2143411, that added together give a palindrome (2143412).

The spelling of 12143411 in words is "twelve million, one hundred forty-three thousand, four hundred eleven".

Divisors: 1 7 821 2113 5747 14791 1734773 12143411