42442401 has 8 divisors (see below), whose sum is σ = 56647360. Its totient is φ = 28266192.

The previous prime is 42442391. The next prime is 42442403. The reversal of 42442401 is 10424424.

42442401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42442401 - 2¹¹ = 42440353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42442403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466 + ... + 9843.

It is an arithmetic number, because the mean of its divisors is an integer number (7080920).

Almost surely, 2^42442401 is an apocalyptic number.

It is an amenable number.

42442401 is a deficient number, since it is larger than the sum of its proper divisors (14204959).

42442401 is a wasteful number, since it uses less digits than its factorization.

42442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14375.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 42442401 is about 6514.7832657733. The cubic root of 42442401 is about 348.8188784961.

Adding to 42442401 its reverse (10424424), we get a palindrome (52866825).

It can be divided in two parts, 4244240 and 1, that added together give a triangular number (4244241 = T₂₉₁₃).

The spelling of 42442401 in words is "forty-two million, four hundred forty-two thousand, four hundred one".