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12000043 = 112347431
BaseRepresentation
bin101101110001…
…101100101011
3211120122222001
4231301230223
511033000133
61105111431
7203666356
oct55615453
924518861
1012000043
1168568a0
124028577
132642023
14184529d
1510c087d
hexb71b2b

12000043 has 8 divisors (see below), whose sum is σ = 13660416. Its totient is φ = 10434600.

The previous prime is 12000029. The next prime is 12000073. The reversal of 12000043 is 34000021.

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

It is not a de Polignac number, because 12000043 - 29 = 11999531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11999993 and 12000029.

It is not an unprimeable number, because it can be changed into a prime (12000073) 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, 23463 + ... + 23968.

It is an arithmetic number, because the mean of its divisors is an integer number (1707552).

Almost surely, 212000043 is an apocalyptic number.

12000043 is a deficient number, since it is larger than the sum of its proper divisors (1660373).

12000043 is a wasteful number, since it uses less digits than its factorization.

12000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47465.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 12000043 is about 3464.1078216476. The cubic root of 12000043 is about 228.9431219699.

Adding to 12000043 its reverse (34000021), we get a palindrome (46000064).

The spelling of 12000043 in words is "twelve million, forty-three", and thus it is an aban number and an uban number.

Divisors: 1 11 23 253 47431 521741 1090913 12000043