422121040 has 80 divisors (see below), whose sum is σ = 1085484096. Its totient is φ = 151372800.

The previous prime is 422121031. The next prime is 422121041. The reversal of 422121040 is 40121224.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422121041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60955 + ... + 67525.

Almost surely, 2^422121040 is an apocalyptic number.

422121040 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 422121040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542742048).

422121040 is an abundant number, since it is smaller than the sum of its proper divisors (663363056).

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

422121040 is a wasteful number, since it uses less digits than its factorization.

422121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668 (or 6662 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 422121040 is about 20545.5844404582. The cubic root of 422121040 is about 750.1457731466.

Adding to 422121040 its reverse (40121224), we get a palindrome (462242264).

The spelling of 422121040 in words is "four hundred twenty-two million, one hundred twenty-one thousand, forty".