422020040 has 96 divisors (see below), whose sum is σ = 1037214720. Its totient is φ = 154462464.

The previous prime is 422020009. The next prime is 422020061. The reversal of 422020040 is 40020224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 422019997 and 422020024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1101689 + ... + 1102071.

It is an arithmetic number, because the mean of its divisors is an integer number (10804320).

Almost surely, 2^422020040 is an apocalyptic number.

422020040 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 422020040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518607360).

422020040 is an abundant number, since it is smaller than the sum of its proper divisors (615194680).

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

422020040 is a wasteful number, since it uses less digits than its factorization.

422020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 566 counting only the distinct ones).

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

The square root of 422020040 is about 20543.1263443518. The cubic root of 422020040 is about 750.0859397817.

Adding to 422020040 its reverse (40020224), we get a palindrome (462040264).

The spelling of 422020040 in words is "four hundred twenty-two million, twenty thousand, forty".