12412440 has 96 divisors (see below), whose sum is σ = 41867280. Its totient is φ = 3307392.

The previous prime is 12412399. The next prime is 12412447. The reversal of 12412440 is 4421421.

12412440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12412447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9082 + ... + 10358.

Almost surely, 2^12412440 is an apocalyptic number.

12412440 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 12412440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20933640).

12412440 is an abundant number, since it is smaller than the sum of its proper divisors (29454840).

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

12412440 is a wasteful number, since it uses less digits than its factorization.

12412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 12412440 is about 3523.1292908436. The cubic root of 12412440 is about 231.5362814322.

Adding to 12412440 its reverse (4421421), we get a palindrome (16833861).

The spelling of 12412440 in words is "twelve million, four hundred twelve thousand, four hundred forty".