42443224249 has 2 divisors, whose sum is σ = 42443224250. Its totient is φ = 42443224248.

The previous prime is 42443224223. The next prime is 42443224273. The reversal of 42443224249 is 94242234424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41643748624 + 799475625 = 204068^2 + 28275^2 .

It is a cyclic number.

It is not a de Polignac number, because 42443224249 - 2¹⁵ = 42443191481 is a prime.

It is a super-3 number, since 3×42443224249³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (42443224289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21221612124 + 21221612125.

It is an arithmetic number, because the mean of its divisors is an integer number (21221612125).

Almost surely, 2^42443224249 is an apocalyptic number.

It is an amenable number.

42443224249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443224249 is an equidigital number, since it uses as much as digits as its factorization.

42443224249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 40.

The spelling of 42443224249 in words is "forty-two billion, four hundred forty-three million, two hundred twenty-four thousand, two hundred forty-nine".