42444401 has 4 divisors (see below), whose sum is σ = 42491904. Its totient is φ = 42396900.

The previous prime is 42444383. The next prime is 42444403. The reversal of 42444401 is 10444424.

42444401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42444401 - 2¹⁰ = 42443377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42444403) 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 3 ways as a sum of consecutive naturals, for example, 22385 + ... + 24206.

It is an arithmetic number, because the mean of its divisors is an integer number (10622976).

Almost surely, 2^42444401 is an apocalyptic number.

It is an amenable number.

42444401 is a deficient number, since it is larger than the sum of its proper divisors (47503).

42444401 is an equidigital number, since it uses as much as digits as its factorization.

42444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47502.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 42444401 is about 6514.9367610131. The cubic root of 42444401 is about 348.8243575044.

Adding to 42444401 its sum of digits (23), we get a palindrome (42444424).

Adding to 42444401 its reverse (10444424), we get a palindrome (52888825).

The spelling of 42444401 in words is "forty-two million, four hundred forty-four thousand, four hundred one".