12243015 has 32 divisors (see below), whose sum is σ = 22717440. Its totient is φ = 6244128.

The previous prime is 12242987. The next prime is 12243019. The reversal of 12243015 is 51034221.

12243015 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12243015 - 2¹⁰ = 12241991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1134 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (709920).

Almost surely, 2^12243015 is an apocalyptic number.

12243015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12243015 is a deficient number, since it is larger than the sum of its proper divisors (10474425).

12243015 is a wasteful number, since it uses less digits than its factorization.

12243015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980 (or 3974 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12243015 is about 3499.0020005710. The cubic root of 12243015 is about 230.4779914460.

Adding to 12243015 its reverse (51034221), we get a palindrome (63277236).

The spelling of 12243015 in words is "twelve million, two hundred forty-three thousand, fifteen".