421002200 has 96 divisors (see below), whose sum is σ = 1002792960. Its totient is φ = 164342400.

The previous prime is 421002173. The next prime is 421002217. The reversal of 421002200 is 2200124.

It is a congruent number.

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, 2204105 + ... + 2204295.

It is an arithmetic number, because the mean of its divisors is an integer number (10445760).

Almost surely, 2^421002200 is an apocalyptic number.

421002200 is a gapful number since it is divisible by the number (40) 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 421002200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501396480).

421002200 is an abundant number, since it is smaller than the sum of its proper divisors (581790760).

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

421002200 is a wasteful number, since it uses less digits than its factorization.

421002200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 421002200 is about 20518.3381393328. The cubic root of 421002200 is about 749.4824280931.

Adding to 421002200 its reverse (2200124), we get a palindrome (423202324).

The spelling of 421002200 in words is "four hundred twenty-one million, two thousand, two hundred".