12300040 has 48 divisors (see below), whose sum is σ = 28530540. Its totient is φ = 4771200.

The previous prime is 12300037. The next prime is 12300047. The reversal of 12300040 is 4000321.

It can be written as a sum of positive squares in 2 ways, for example, as 10666756 + 1633284 = 3266^2 + 1278^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (12300047) 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 11 ways as a sum of consecutive naturals, for example, 173205 + ... + 173275.

Almost surely, 2^12300040 is an apocalyptic number.

12300040 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 12300040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14265270).

12300040 is an abundant number, since it is smaller than the sum of its proper divisors (16230500).

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

12300040 is an equidigital number, since it uses as much as digits as its factorization.

12300040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 12300040 is about 3507.1412860049. The cubic root of 12300040 is about 230.8352742028.

Adding to 12300040 its reverse (4000321), we get a palindrome (16300361).

The spelling of 12300040 in words is "twelve million, three hundred thousand, forty".