422013540 has 144 divisors (see below), whose sum is σ = 1317242304. Its totient is φ = 100350720.

The previous prime is 422013523. The next prime is 422013547. The reversal of 422013540 is 45310224.

It is not an unprimeable number, because it can be changed into a prime (422013547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 749299 + ... + 749861.

It is an arithmetic number, because the mean of its divisors is an integer number (9147516).

Almost surely, 2^422013540 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 422013540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658621152).

422013540 is an abundant number, since it is smaller than the sum of its proper divisors (895228764).

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

422013540 is a wasteful number, since it uses less digits than its factorization.

422013540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 422013540 is about 20542.9681399743. The cubic root of 422013540 is about 750.0820887927.

Adding to 422013540 its reverse (45310224), we get a palindrome (467323764).

The spelling of 422013540 in words is "four hundred twenty-two million, thirteen thousand, five hundred forty".