12424215 has 16 divisors (see below), whose sum is σ = 20302848. Its totient is φ = 6484896.

The previous prime is 12424201. The next prime is 12424231. The reversal of 12424215 is 51242421.

It is not a de Polignac number, because 12424215 - 2¹³ = 12416023 is a prime.

It is a super-2 number, since 2×12424215² = 308722236732450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12424191 and 12424200.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8107 + ... + 9516.

It is an arithmetic number, because the mean of its divisors is an integer number (1268928).

Almost surely, 2^12424215 is an apocalyptic number.

12424215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12424215 is a deficient number, since it is larger than the sum of its proper divisors (7878633).

12424215 is a wasteful number, since it uses less digits than its factorization.

12424215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17678.

The product of its digits is 640, while the sum is 21.

The square root of 12424215 is about 3524.7999943259. The cubic root of 12424215 is about 231.6094735432.

Adding to 12424215 its reverse (51242421), we get a palindrome (63666636).

The spelling of 12424215 in words is "twelve million, four hundred twenty-four thousand, two hundred fifteen".