422181140 has 48 divisors (see below), whose sum is σ = 935155200. Its totient is φ = 159656832.

The previous prime is 422181139. The next prime is 422181161. The reversal of 422181140 is 41181224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268637 + ... + 270203.

It is an arithmetic number, because the mean of its divisors is an integer number (19482400).

Almost surely, 2^422181140 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 422181140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467577600).

422181140 is an abundant number, since it is smaller than the sum of its proper divisors (512974060).

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

422181140 is a wasteful number, since it uses less digits than its factorization.

422181140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 422181140 is about 20547.0469897745. The cubic root of 422181140 is about 750.1813724315.

The spelling of 422181140 in words is "four hundred twenty-two million, one hundred eighty-one thousand, one hundred forty".