422423432020040 has 128 divisors (see below), whose sum is σ = 1039953188736000. Its totient is φ = 153150073286400.

The previous prime is 422423432020013. The next prime is 422423432020043. The reversal of 422423432020040 is 40020234324224.

It is a junction number, because it is equal to n+sod(n) for n = 422423432019979 and 422423432020006.

It is not an unprimeable number, because it can be changed into a prime (422423432020043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 798855335 + ... + 799383945.

It is an arithmetic number, because the mean of its divisors is an integer number (8124634287000).

Almost surely, 2^{422423432020040} is an apocalyptic number.

422423432020040 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 422423432020040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519976594368000).

422423432020040 is an abundant number, since it is smaller than the sum of its proper divisors (617529756715960).

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

422423432020040 is a wasteful number, since it uses less digits than its factorization.

422423432020040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534051 (or 534047 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 422423432020040 its reverse (40020234324224), we get a palindrome (462443666344264).

The spelling of 422423432020040 in words is "four hundred twenty-two trillion, four hundred twenty-three billion, four hundred thirty-two million, twenty thousand, forty".