422005542 has 96 divisors (see below), whose sum is σ = 1067258880. Its totient is φ = 110496960.

The previous prime is 422005531. The next prime is 422005559. The reversal of 422005542 is 245500224.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171948 + ... + 174384.

It is an arithmetic number, because the mean of its divisors is an integer number (11117280).

Almost surely, 2^422005542 is an apocalyptic number.

422005542 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 422005542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533629440).

422005542 is an abundant number, since it is smaller than the sum of its proper divisors (645253338).

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

422005542 is a wasteful number, since it uses less digits than its factorization.

422005542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506 (or 2499 counting only the distinct ones).

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

The square root of 422005542 is about 20542.7734739007. The cubic root of 422005542 is about 750.0773502445.

Adding to 422005542 its reverse (245500224), we get a palindrome (667505766).

The spelling of 422005542 in words is "four hundred twenty-two million, five thousand, five hundred forty-two".