200420044040 has 32 divisors (see below), whose sum is σ = 452816262360. Its totient is φ = 79835366400.

The previous prime is 200420044007. The next prime is 200420044043. The reversal of 200420044040 is 40440024002.

It can be written as a sum of positive squares in 4 ways, for example, as 200369035876 + 51008164 = 447626^2 + 7142^2 .

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

It is not an unprimeable number, because it can be changed into a prime (200420044043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10385591 + ... + 10404870.

Almost surely, 2^200420044040 is an apocalyptic number.

200420044040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200420044040 is an abundant number, since it is smaller than the sum of its proper divisors (252396218320).

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

200420044040 is a wasteful number, since it uses less digits than its factorization.

200420044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20790713 (or 20790709 counting only the distinct ones).

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

Adding to 200420044040 its reverse (40440024002), we get a palindrome (240860068042).

The spelling of 200420044040 in words is "two hundred billion, four hundred twenty million, forty-four thousand, forty".