400420242200 has 72 divisors (see below), whose sum is σ = 1023305428740. Its totient is φ = 145607352000.

The previous prime is 400420242197. The next prime is 400420242239. The reversal of 400420242200 is 2242024004.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8248946 + ... + 8297345.

Almost surely, 2^400420242200 is an apocalyptic number.

400420242200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400420242200 is an abundant number, since it is smaller than the sum of its proper divisors (622885186540).

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

400420242200 is a wasteful number, since it uses less digits than its factorization.

400420242200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16546329 (or 16546309 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 400420242200 its reverse (2242024004), we get a palindrome (402662266204).

The spelling of 400420242200 in words is "four hundred billion, four hundred twenty million, two hundred forty-two thousand, two hundred".