42440244 has 96 divisors (see below), whose sum is σ = 128894976. Its totient is φ = 10538880.

The previous prime is 42440197. The next prime is 42440249. The reversal of 42440244 is 44204424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20254 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (1342656).

Almost surely, 2^42440244 is an apocalyptic number.

42440244 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42440244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64447488).

42440244 is an abundant number, since it is smaller than the sum of its proper divisors (86454732).

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

42440244 is a wasteful number, since it uses less digits than its factorization.

42440244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 42440244 is about 6514.6177171036. The cubic root of 42440244 is about 348.8129691927.

Adding to 42440244 its reverse (44204424), we get a palindrome (86644668).

The spelling of 42440244 in words is "forty-two million, four hundred forty thousand, two hundred forty-four".