422402440 has 32 divisors (see below), whose sum is σ = 951128280. Its totient is φ = 168832512.

The previous prime is 422402353. The next prime is 422402441. The reversal of 422402440 is 44204224.

It can be written as a sum of positive squares in 4 ways, for example, as 364733604 + 57668836 = 19098^2 + 7594^2 .

It is not an unprimeable number, because it can be changed into a prime (422402441) 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 7 ways as a sum of consecutive naturals, for example, 63094 + ... + 69466.

Almost surely, 2^422402440 is an apocalyptic number.

422402440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422402440 is an abundant number, since it is smaller than the sum of its proper divisors (528725840).

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

422402440 is a wasteful number, since it uses less digits than its factorization.

422402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041 (or 8037 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 422402440 is about 20552.4314863230. The cubic root of 422402440 is about 750.3124268716.

Adding to 422402440 its reverse (44204224), we get a palindrome (466606664).

The spelling of 422402440 in words is "four hundred twenty-two million, four hundred two thousand, four hundred forty".