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12245141 = 43128411
BaseRepresentation
bin101110101101…
…100010010101
3212001010011202
4232231202111
511113321031
61114242245
7206040056
oct56554225
925033152
1012245141
116a03a57
124126385
1326c975c
1418aa72d
15111d2cb
hexbad895

12245141 has 4 divisors (see below), whose sum is σ = 12273984. Its totient is φ = 12216300.

The previous prime is 12245119. The next prime is 12245143. The reversal of 12245141 is 14154221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14154221 = 19744959.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12245141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12245143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13775 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (3068496).

Almost surely, 212245141 is an apocalyptic number.

It is an amenable number.

12245141 is a deficient number, since it is larger than the sum of its proper divisors (28843).

12245141 is an equidigital number, since it uses as much as digits as its factorization.

12245141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28842.

The product of its digits is 320, while the sum is 20.

The square root of 12245141 is about 3499.3057882957. The cubic root of 12245141 is about 230.4913315110.

Adding to 12245141 its reverse (14154221), we get a palindrome (26399362).

The spelling of 12245141 in words is "twelve million, two hundred forty-five thousand, one hundred forty-one".

Divisors: 1 431 28411 12245141