421242200 has 96 divisors (see below), whose sum is σ = 1025559360. Its totient is φ = 160742400.

The previous prime is 421242187. The next prime is 421242209. The reversal of 421242200 is 2242124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421242209) 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, 384854 + ... + 385946.

It is an arithmetic number, because the mean of its divisors is an integer number (10682910).

Almost surely, 2^421242200 is an apocalyptic number.

421242200 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 421242200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512779680).

421242200 is an abundant number, since it is smaller than the sum of its proper divisors (604317160).

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

421242200 is a wasteful number, since it uses less digits than its factorization.

421242200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 421242200 is about 20524.1857329347. The cubic root of 421242200 is about 749.6248197584.

Adding to 421242200 its reverse (2242124), we get a palindrome (423484324).

The spelling of 421242200 in words is "four hundred twenty-one million, two hundred forty-two thousand, two hundred".