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12385121 = 73747819
BaseRepresentation
bin101111001111…
…101101100001
3212022020012012
4233033231201
511132310441
61121242305
7210162140
oct57175541
925266165
1012385121
116a9a141
124193395
132748398
141905757
1511499eb
hexbcfb61

12385121 has 8 divisors (see below), whose sum is σ = 14537280. Its totient is φ = 10328688.

The previous prime is 12385081. The next prime is 12385159. The reversal of 12385121 is 12158321.

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 12385121 - 218 = 12122977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12385621) 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, 23651 + ... + 24168.

It is an arithmetic number, because the mean of its divisors is an integer number (1817160).

Almost surely, 212385121 is an apocalyptic number.

It is an amenable number.

12385121 is a deficient number, since it is larger than the sum of its proper divisors (2152159).

12385121 is an equidigital number, since it uses as much as digits as its factorization.

12385121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47863.

The product of its digits is 480, while the sum is 23.

The square root of 12385121 is about 3519.2500621581. The cubic root of 12385121 is about 231.3662910593.

The spelling of 12385121 in words is "twelve million, three hundred eighty-five thousand, one hundred twenty-one".

Divisors: 1 7 37 259 47819 334733 1769303 12385121