42224387389 has 2 divisors, whose sum is σ = 42224387390. Its totient is φ = 42224387388.

The previous prime is 42224387333. The next prime is 42224387423. The reversal of 42224387389 is 98378342224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30789720900 + 11434666489 = 175470^2 + 106933^2 .

It is a cyclic number.

It is not a de Polignac number, because 42224387389 - 2¹⁷ = 42224256317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42224387189) 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, 21112193694 + 21112193695.

It is an arithmetic number, because the mean of its divisors is an integer number (21112193695).

Almost surely, 2^42224387389 is an apocalyptic number.

It is an amenable number.

42224387389 is a deficient number, since it is larger than the sum of its proper divisors (1).

42224387389 is an equidigital number, since it uses as much as digits as its factorization.

42224387389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 52.

The spelling of 42224387389 in words is "forty-two billion, two hundred twenty-four million, three hundred eighty-seven thousand, three hundred eighty-nine".