422235240 has 128 divisors (see below), whose sum is σ = 1452384000. Its totient is φ = 96196608.

The previous prime is 422235223. The next prime is 422235241. The reversal of 422235240 is 42532224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 422235240.

It is not an unprimeable number, because it can be changed into a prime (422235241) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 342946 + ... + 344174.

It is an arithmetic number, because the mean of its divisors is an integer number (11346750).

Almost surely, 2^422235240 is an apocalyptic number.

422235240 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 422235240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726192000).

422235240 is an abundant number, since it is smaller than the sum of its proper divisors (1030148760).

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

422235240 is a wasteful number, since it uses less digits than its factorization.

422235240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 422235240 is about 20548.3634384834. The cubic root of 422235240 is about 750.2134148219.

Adding to 422235240 its reverse (42532224), we get a palindrome (464767464).

The spelling of 422235240 in words is "four hundred twenty-two million, two hundred thirty-five thousand, two hundred forty".