200420134400 has 60 divisors (see below), whose sum is σ = 496556572512. Its totient is φ = 80168048640.

The previous prime is 200420134381. The next prime is 200420134457. The reversal of 200420134400 is 4431024002.

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 5 ways as a sum of consecutive naturals, for example, 7816112 + ... + 7841711.

Almost surely, 2^200420134400 is an apocalyptic number.

200420134400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200420134400 is an abundant number, since it is smaller than the sum of its proper divisors (296136438112).

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

200420134400 is an equidigital number, since it uses as much as digits as its factorization.

200420134400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15657851 (or 15657830 counting only the distinct ones).

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

Adding to 200420134400 its reverse (4431024002), we get a palindrome (204851158402).

The spelling of 200420134400 in words is "two hundred billion, four hundred twenty million, one hundred thirty-four thousand, four hundred".