42244041545 has 4 divisors (see below), whose sum is σ = 50692849860. Its totient is φ = 33795233232.

The previous prime is 42244041517. The next prime is 42244041547. The reversal of 42244041545 is 54514044224.

It is a happy number.

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 4506705424 + 37737336121 = 67132^2 + 194261^2 .

It is a cyclic number.

It is not a de Polignac number, because 42244041545 - 2⁸ = 42244041289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42244041547) 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, 4224404150 + ... + 4224404159.

It is an arithmetic number, because the mean of its divisors is an integer number (12673212465).

Almost surely, 2^42244041545 is an apocalyptic number.

It is an amenable number.

42244041545 is a deficient number, since it is larger than the sum of its proper divisors (8448808315).

42244041545 is an equidigital number, since it uses as much as digits as its factorization.

42244041545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448808314.

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 42244041545 its reverse (54514044224), we get a palindrome (96758085769).

The spelling of 42244041545 in words is "forty-two billion, two hundred forty-four million, forty-one thousand, five hundred forty-five".