40422020000 has 120 divisors (see below), whose sum is σ = 100566011700. Its totient is φ = 15986432000.

The previous prime is 40422019951. The next prime is 40422020027. The reversal of 40422020000 is 2022404.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 21186549136 + 19235470864 = 145556^2 + 138692^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1768646 + ... + 1791354.

Almost surely, 2^40422020000 is an apocalyptic number.

40422020000 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 40422020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50283005850).

40422020000 is an abundant number, since it is smaller than the sum of its proper divisors (60143991700).

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

40422020000 is an equidigital number, since it uses as much as digits as its factorization.

40422020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22828 (or 22805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 40422020000 its reverse (2022404), we get a palindrome (40424042404).

The spelling of 40422020000 in words is "forty billion, four hundred twenty-two million, twenty thousand".