42400244 has 24 divisors (see below), whose sum is σ = 78825600. Its totient is φ = 19886976.

The previous prime is 42400243. The next prime is 42400249. The reversal of 42400244 is 44200424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24107 + ... + 25805.

It is an arithmetic number, because the mean of its divisors is an integer number (3284400).

Almost surely, 2^42400244 is an apocalyptic number.

It is an amenable number.

42400244 is a deficient number, since it is larger than the sum of its proper divisors (36425356).

42400244 is a wasteful number, since it uses less digits than its factorization.

42400244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087 (or 2085 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 42400244 is about 6511.5469744140. The cubic root of 42400244 is about 348.7033491468.

Adding to 42400244 its reverse (44200424), we get a palindrome (86600668).

The spelling of 42400244 in words is "forty-two million, four hundred thousand, two hundred forty-four".