422504531540 has 288 divisors, whose sum is σ = 1149230928384. Its totient is φ = 129243340800.

The previous prime is 422504531521. The next prime is 422504531551. The reversal of 422504531540 is 45135405224.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 422504531540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53134565 + ... + 53142515.

It is an arithmetic number, because the mean of its divisors is an integer number (3990385168).

Almost surely, 2^422504531540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422504531540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574615464192).

422504531540 is an abundant number, since it is smaller than the sum of its proper divisors (726726396844).

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

422504531540 is a wasteful number, since it uses less digits than its factorization.

422504531540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127 (or 8118 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 422504531540 its reverse (45135405224), we get a palindrome (467639936764).

The spelling of 422504531540 in words is "four hundred twenty-two billion, five hundred four million, five hundred thirty-one thousand, five hundred forty".