422020240040 has 96 divisors (see below), whose sum is σ = 1104824399400. Its totient is φ = 144659773440.

The previous prime is 422020240013. The next prime is 422020240063. The reversal of 422020240040 is 40042020224.

It can be written as a sum of positive squares in 4 ways, for example, as 376718523076 + 45301716964 = 613774^2 + 212842^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 422020239994 and 422020240021.

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 23 ways as a sum of consecutive naturals, for example, 9560420 + ... + 9604460.

Almost surely, 2^422020240040 is an apocalyptic number.

422020240040 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 422020240040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552412199700).

422020240040 is an abundant number, since it is smaller than the sum of its proper divisors (682804159360).

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

422020240040 is a wasteful number, since it uses less digits than its factorization.

422020240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48955 (or 48944 counting only the distinct ones).

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

Adding to 422020240040 its reverse (40042020224), we get a palindrome (462062260264).

The spelling of 422020240040 in words is "four hundred twenty-two billion, twenty million, two hundred forty thousand, forty".