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12706201 = 42130181
BaseRepresentation
bin110000011110…
…000110011001
3212220112122001
4300132012121
511223044301
61132201001
7213000214
oct60360631
925815561
1012706201
1171993a2
124309161
13282b581
14198a77b
1511aec01
hexc1e199

12706201 has 4 divisors (see below), whose sum is σ = 12736804. Its totient is φ = 12675600.

The previous prime is 12706171. The next prime is 12706217. The reversal of 12706201 is 10260721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1974025 + 10732176 = 1405^2 + 3276^2 .

It is a cyclic number.

It is not a de Polignac number, because 12706201 - 27 = 12706073 is a prime.

It is a super-2 number, since 2×127062012 = 322895087704802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12706241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14670 + ... + 15511.

It is an arithmetic number, because the mean of its divisors is an integer number (3184201).

Almost surely, 212706201 is an apocalyptic number.

It is an amenable number.

12706201 is a deficient number, since it is larger than the sum of its proper divisors (30603).

12706201 is an equidigital number, since it uses as much as digits as its factorization.

12706201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30602.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12706201 is about 3564.5758513461. The cubic root of 12706201 is about 233.3486219007.

Adding to 12706201 its reverse (10260721), we get a palindrome (22966922).

The spelling of 12706201 in words is "twelve million, seven hundred six thousand, two hundred one".

Divisors: 1 421 30181 12706201