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12243461 = 41298621
BaseRepresentation
bin101110101101…
…001000000101
3212001000212112
4232231020011
511113242321
61114230405
7206032136
oct56551005
925030775
1012243461
116a0276a
124125405
1326c8a69
1418a9c8d
15111ca5b
hexbad205

12243461 has 4 divisors (see below), whose sum is σ = 12542124. Its totient is φ = 11944800.

The previous prime is 12243457. The next prime is 12243541. The reversal of 12243461 is 16434221.

12243461 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16434221 = 19864959.

It can be written as a sum of positive squares in 2 ways, for example, as 5452225 + 6791236 = 2335^2 + 2606^2 .

It is a cyclic number.

It is not a de Polignac number, because 12243461 - 22 = 12243457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243401) 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, 149270 + ... + 149351.

It is an arithmetic number, because the mean of its divisors is an integer number (3135531).

Almost surely, 212243461 is an apocalyptic number.

It is an amenable number.

12243461 is a deficient number, since it is larger than the sum of its proper divisors (298663).

12243461 is an equidigital number, since it uses as much as digits as its factorization.

12243461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298662.

The product of its digits is 1152, while the sum is 23.

The square root of 12243461 is about 3499.0657324492. The cubic root of 12243461 is about 230.4807901012.

Adding to 12243461 its reverse (16434221), we get a palindrome (28677682).

The spelling of 12243461 in words is "twelve million, two hundred forty-three thousand, four hundred sixty-one".

Divisors: 1 41 298621 12243461