422520450 has 96 divisors (see below), whose sum is σ = 1150854912. Its totient is φ = 101736000.

The previous prime is 422520443. The next prime is 422520481. The reversal of 422520450 is 54025224.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 422520450.

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 47 ways as a sum of consecutive naturals, for example, 268165 + ... + 269735.

It is an arithmetic number, because the mean of its divisors is an integer number (11988072).

Almost surely, 2^422520450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422520450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575427456).

422520450 is an abundant number, since it is smaller than the sum of its proper divisors (728334462).

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

422520450 is a wasteful number, since it uses less digits than its factorization.

422520450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 422520450 is about 20555.3022356763. The cubic root of 422520450 is about 750.3822939909.

Adding to 422520450 its reverse (54025224), we get a palindrome (476545674).

The spelling of 422520450 in words is "four hundred twenty-two million, five hundred twenty thousand, four hundred fifty".