12424540 has 12 divisors (see below), whose sum is σ = 26091576. Its totient is φ = 4969808.

The previous prime is 12424523. The next prime is 12424543. The reversal of 12424540 is 4542421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310594 + ... + 310633.

It is an arithmetic number, because the mean of its divisors is an integer number (2174298).

Almost surely, 2^12424540 is an apocalyptic number.

12424540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12424540 is an abundant number, since it is smaller than the sum of its proper divisors (13667036).

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

12424540 is a wasteful number, since it uses less digits than its factorization.

12424540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621236 (or 621234 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 12424540 is about 3524.8460959310. The cubic root of 12424540 is about 231.6114930517.

Adding to 12424540 its reverse (4542421), we get a palindrome (16966961).

The spelling of 12424540 in words is "twelve million, four hundred twenty-four thousand, five hundred forty".