12420210 has 64 divisors (see below), whose sum is σ = 33105024. Its totient is φ = 2956800.

The previous prime is 12420151. The next prime is 12420211. The reversal of 12420210 is 1202421.

12420210 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12420211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19822 + ... + 20438.

It is an arithmetic number, because the mean of its divisors is an integer number (517266).

Almost surely, 2^12420210 is an apocalyptic number.

12420210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16552512).

12420210 is an abundant number, since it is smaller than the sum of its proper divisors (20684814).

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

12420210 is a wasteful number, since it uses less digits than its factorization.

12420210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12420210 is about 3524.2318311939. The cubic root of 12420210 is about 231.5845840933.

Adding to 12420210 its reverse (1202421), we get a palindrome (13622631).

The spelling of 12420210 in words is "twelve million, four hundred twenty thousand, two hundred ten".