42440101 has 4 divisors (see below), whose sum is σ = 46298304. Its totient is φ = 38581900.

The previous prime is 42440093. The next prime is 42440113. The reversal of 42440101 is 10104424.

42440101 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 42440101 - 2³ = 42440093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440161) 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, 1929085 + ... + 1929106.

It is an arithmetic number, because the mean of its divisors is an integer number (11574576).

Almost surely, 2^42440101 is an apocalyptic number.

It is an amenable number.

42440101 is a deficient number, since it is larger than the sum of its proper divisors (3858203).

42440101 is a wasteful number, since it uses less digits than its factorization.

42440101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858202.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42440101 is about 6514.6067417765. The cubic root of 42440101 is about 348.8125774238.

Adding to 42440101 its reverse (10104424), we get a palindrome (52544525).

The spelling of 42440101 in words is "forty-two million, four hundred forty thousand, one hundred one".