42440850 has 72 divisors (see below), whose sum is σ = 117152100. Its totient is φ = 11007360.

The previous prime is 42440821. The next prime is 42440861. The reversal of 42440850 is 5804424.

It can be written as a sum of positive squares in 6 ways, for example, as 34539129 + 7901721 = 5877^2 + 2811^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15376 + ... + 17924.

Almost surely, 2^42440850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42440850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58576050).

42440850 is an abundant number, since it is smaller than the sum of its proper divisors (74711250).

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

42440850 is a wasteful number, since it uses less digits than its factorization.

42440850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604 (or 2596 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 42440850 is about 6514.6642277250. The cubic root of 42440850 is about 348.8146294067.

The spelling of 42440850 in words is "forty-two million, four hundred forty thousand, eight hundred fifty".