42243320045 has 4 divisors (see below), whose sum is σ = 50691984060. Its totient is φ = 33794656032.

The previous prime is 42243320011. The next prime is 42243320051. The reversal of 42243320045 is 54002334224.

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 20101284841 + 22142035204 = 141779^2 + 148802^2 .

It is a cyclic number.

It is not a de Polignac number, because 42243320045 - 2¹⁰ = 42243319021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4224332000 + ... + 4224332009.

It is an arithmetic number, because the mean of its divisors is an integer number (12672996015).

Almost surely, 2^42243320045 is an apocalyptic number.

It is an amenable number.

42243320045 is a deficient number, since it is larger than the sum of its proper divisors (8448664015).

42243320045 is an equidigital number, since it uses as much as digits as its factorization.

42243320045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448664014.

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 42243320045 its reverse (54002334224), we get a palindrome (96245654269).

The spelling of 42243320045 in words is "forty-two billion, two hundred forty-three million, three hundred twenty thousand, forty-five".