42644322 has 96 divisors (see below), whose sum is σ = 113817600. Its totient is φ = 11267424.

The previous prime is 42644293. The next prime is 42644333. The reversal of 42644322 is 22344624.

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, 112329 + ... + 112707.

It is an arithmetic number, because the mean of its divisors is an integer number (1185600).

Almost surely, 2^42644322 is an apocalyptic number.

42644322 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 42644322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56908800).

42644322 is an abundant number, since it is smaller than the sum of its proper divisors (71173278).

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

42644322 is a wasteful number, since it uses less digits than its factorization.

42644322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 457 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 42644322 is about 6530.2620161828. The cubic root of 42644322 is about 349.3711756670.

Adding to 42644322 its reverse (22344624), we get a palindrome (64988946).

The spelling of 42644322 in words is "forty-two million, six hundred forty-four thousand, three hundred twenty-two".