6420420200 has 96 divisors (see below), whose sum is σ = 15481152000. Its totient is φ = 2473363200.

The previous prime is 6420420191. The next prime is 6420420233. The reversal of 6420420200 is 20240246.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2777045 + ... + 2779355.

It is an arithmetic number, because the mean of its divisors is an integer number (161262000).

Almost surely, 2^6420420200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6420420200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7740576000).

6420420200 is an abundant number, since it is smaller than the sum of its proper divisors (9060731800).

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

6420420200 is a wasteful number, since it uses less digits than its factorization.

6420420200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 6420420200 is about 80127.5246092128. The cubic root of 6420420200 is about 1858.6080656291.

Adding to 6420420200 its reverse (20240246), we get a palindrome (6440660446).

The spelling of 6420420200 in words is "six billion, four hundred twenty million, four hundred twenty thousand, two hundred".