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12418121 = 411392179
BaseRepresentation
bin101111010111…
…110001001001
3212100220110102
4233113301021
511134334441
61122055145
7210360302
oct57276111
925326412
1012418121
117011a11
1241aa4b5
13275a401
1419137a9
15115469b
hexbd7c49

12418121 has 8 divisors (see below), whose sum is σ = 12818400. Its totient is φ = 12022560.

The previous prime is 12418117. The next prime is 12418141. The reversal of 12418121 is 12181421.

12418121 is digitally balanced in base 3, because in such base 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 a cyclic number.

It is not a de Polignac number, because 12418121 - 22 = 12418117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12418093 and 12418102.

It is not an unprimeable number, because it can be changed into a prime (12418111) 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, 4610 + ... + 6788.

It is an arithmetic number, because the mean of its divisors is an integer number (1602300).

Almost surely, 212418121 is an apocalyptic number.

It is an amenable number.

12418121 is a deficient number, since it is larger than the sum of its proper divisors (400279).

12418121 is a wasteful number, since it uses less digits than its factorization.

12418121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359.

The product of its digits is 128, while the sum is 20.

The square root of 12418121 is about 3523.9354420874. The cubic root of 12418121 is about 231.5715996826.

Adding to 12418121 its reverse (12181421), we get a palindrome (24599542).

The spelling of 12418121 in words is "twelve million, four hundred eighteen thousand, one hundred twenty-one".

Divisors: 1 41 139 2179 5699 89339 302881 12418121