422343240 has 384 divisors, whose sum is σ = 1551312000. Its totient is φ = 91463680.

The previous prime is 422343239. The next prime is 422343241. The reversal of 422343240 is 42343224.

It is an interprime number because it is at equal distance from previous prime (422343239) and next prime (422343241).

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 422343240.

It is not an unprimeable number, because it can be changed into a prime (422343241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7158331 + ... + 7158389.

It is an arithmetic number, because the mean of its divisors is an integer number (4039875).

Almost surely, 2^422343240 is an apocalyptic number.

422343240 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 422343240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775656000).

422343240 is an abundant number, since it is smaller than the sum of its proper divisors (1128968760).

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

422343240 is a wasteful number, since it uses less digits than its factorization.

422343240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 422343240 is about 20550.9912169705. The cubic root of 422343240 is about 750.2773729619.

Adding to 422343240 its reverse (42343224), we get a palindrome (464686464).

The spelling of 422343240 in words is "four hundred twenty-two million, three hundred forty-three thousand, two hundred forty".