42044344501 has 4 divisors (see below), whose sum is σ = 42218802604. Its totient is φ = 41869886400.

The previous prime is 42044344499. The next prime is 42044344519. The reversal of 42044344501 is 10544344024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20088810225 + 21955534276 = 141735^2 + 148174^2 .

It is a cyclic number.

It is not a de Polignac number, because 42044344501 - 2¹ = 42044344499 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 (42044344201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87228690 + ... + 87229171.

It is an arithmetic number, because the mean of its divisors is an integer number (10554700651).

Almost surely, 2^42044344501 is an apocalyptic number.

It is an amenable number.

42044344501 is a deficient number, since it is larger than the sum of its proper divisors (174458103).

42044344501 is a wasteful number, since it uses less digits than its factorization.

42044344501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174458102.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 42044344501 its reverse (10544344024), we get a palindrome (52588688525).

The spelling of 42044344501 in words is "forty-two billion, forty-four million, three hundred forty-four thousand, five hundred one".