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12144111 = 37282613
BaseRepresentation
bin101110010100…
…110111101111
3211211222120220
4232110313233
511102102421
61112142423
7205136400
oct56246757
924758526
1012144111
116945061
124097a13
132692785
1418819a7
1510ed3c6
hexb94def

12144111 has 12 divisors (see below), whose sum is σ = 18835992. Its totient is φ = 6939408.

The previous prime is 12144101. The next prime is 12144113. The reversal of 12144111 is 11144121.

It is a de Polignac number, because none of the positive numbers 2k-12144111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41160 + ... + 41453.

It is an arithmetic number, because the mean of its divisors is an integer number (1569666).

Almost surely, 212144111 is an apocalyptic number.

12144111 is a deficient number, since it is larger than the sum of its proper divisors (6691881).

12144111 is an equidigital number, since it uses as much as digits as its factorization.

12144111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82630 (or 82623 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 12144111 is about 3484.8401685013. The cubic root of 12144111 is about 229.8556813596.

Adding to 12144111 its reverse (11144121), we get a palindrome (23288232).

The spelling of 12144111 in words is "twelve million, one hundred forty-four thousand, one hundred eleven".

Divisors: 1 3 7 21 49 147 82613 247839 578291 1734873 4048037 12144111