12424530440 has 128 divisors (see below), whose sum is σ = 32897664000. Its totient is φ = 4133928960.

The previous prime is 12424530439. The next prime is 12424530487. The reversal of 12424530440 is 4403542421.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4650305 + ... + 4652975.

It is an arithmetic number, because the mean of its divisors is an integer number (257013000).

Almost surely, 2^12424530440 is an apocalyptic number.

12424530440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12424530440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16448832000).

12424530440 is an abundant number, since it is smaller than the sum of its proper divisors (20473133560).

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

12424530440 is a wasteful number, since it uses less digits than its factorization.

12424530440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175 (or 3171 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The spelling of 12424530440 in words is "twelve billion, four hundred twenty-four million, five hundred thirty thousand, four hundred forty".