12426520 has 16 divisors (see below), whose sum is σ = 27959760. Its totient is φ = 4970592.

The previous prime is 12426517. The next prime is 12426523. The reversal of 12426520 is 2562421.

It is an interprime number because it is at equal distance from previous prime (12426517) and next prime (12426523).

It is a junction number, because it is equal to n+sod(n) for n = 12426491 and 12426500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12426523) 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, 155292 + ... + 155371.

It is an arithmetic number, because the mean of its divisors is an integer number (1747485).

Almost surely, 2^12426520 is an apocalyptic number.

12426520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12426520 is an abundant number, since it is smaller than the sum of its proper divisors (15533240).

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

12426520 is a wasteful number, since it uses less digits than its factorization.

12426520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310674 (or 310670 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12426520 is about 3525.1269480687. The cubic root of 12426520 is about 231.6237957579.

Adding to 12426520 its reverse (2562421), we get a palindrome (14988941).

The spelling of 12426520 in words is "twelve million, four hundred twenty-six thousand, five hundred twenty".