12420024 has 16 divisors (see below), whose sum is σ = 31050120. Its totient is φ = 4140000.

The previous prime is 12420019. The next prime is 12420029. The reversal of 12420024 is 42002421.

It is an interprime number because it is at equal distance from previous prime (12420019) and next prime (12420029).

It is a junction number, because it is equal to n+sod(n) for n = 12419985 and 12420012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420029) 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, 258727 + ... + 258774.

Almost surely, 2^12420024 is an apocalyptic number.

It is an amenable number.

12420024 is an abundant number, since it is smaller than the sum of its proper divisors (18630096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12420024 is a wasteful number, since it uses less digits than its factorization.

12420024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517510 (or 517506 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 12420024 is about 3524.2054423657. The cubic root of 12420024 is about 231.5834280487.

Adding to 12420024 its reverse (42002421), we get a palindrome (54422445).

The spelling of 12420024 in words is "twelve million, four hundred twenty thousand, twenty-four".