42020244245 has 12 divisors (see below), whose sum is σ = 58656831084. Its totient is φ = 28813881600.

The previous prime is 42020244223. The next prime is 42020244263. The reversal of 42020244245 is 54244202024.

It can be written as a sum of positive squares in 2 ways, for example, as 12747087409 + 29273156836 = 112903^2 + 171094^2 .

It is not a de Polignac number, because 42020244245 - 2¹⁶ = 42020178709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85755356 + ... + 85755845.

It is an arithmetic number, because the mean of its divisors is an integer number (4888069257).

Almost surely, 2^42020244245 is an apocalyptic number.

It is an amenable number.

42020244245 is a deficient number, since it is larger than the sum of its proper divisors (16636586839).

42020244245 is a wasteful number, since it uses less digits than its factorization.

42020244245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171511220 (or 171511213 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 42020244245 its reverse (54244202024), we get a palindrome (96264446269).

The spelling of 42020244245 in words is "forty-two billion, twenty million, two hundred forty-four thousand, two hundred forty-five".