42444240022237 has 2 divisors, whose sum is σ = 42444240022238. Its totient is φ = 42444240022236.

The previous prime is 42444240022201. The next prime is 42444240022271. The reversal of 42444240022237 is 73222004244424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41965183626916 + 479056395321 = 6478054^2 + 692139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42444240022237 is a prime.

It is a super-2 number, since 2×42444240022237² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42444240022237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42444240022537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222120011118 + 21222120011119.

It is an arithmetic number, because the mean of its divisors is an integer number (21222120011119).

Almost surely, 2^{42444240022237} is an apocalyptic number.

It is an amenable number.

42444240022237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444240022237 is an equidigital number, since it uses as much as digits as its factorization.

42444240022237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 688128, while the sum is 40.

The spelling of 42444240022237 in words is "forty-two trillion, four hundred forty-four billion, two hundred forty million, twenty-two thousand, two hundred thirty-seven".