400421343300 has 216 divisors, whose sum is σ = 1276164153600. Its totient is φ = 96864979200.

The previous prime is 400421343293. The next prime is 400421343331. The reversal of 400421343300 is 3343124004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17376186 + ... + 17399214.

Almost surely, 2^400421343300 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 400421343300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638082076800).

400421343300 is an abundant number, since it is smaller than the sum of its proper divisors (875742810300).

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

400421343300 is a wasteful number, since it uses less digits than its factorization.

400421343300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23547 (or 23529 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 400421343300 its reverse (3343124004), we get a palindrome (403764467304).

The spelling of 400421343300 in words is "four hundred billion, four hundred twenty-one million, three hundred forty-three thousand, three hundred".