42222238609 has 2 divisors, whose sum is σ = 42222238610. Its totient is φ = 42222238608.

The previous prime is 42222238601. The next prime is 42222238633. The reversal of 42222238609 is 90683222224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35738768209 + 6483470400 = 189047^2 + 80520^2 .

It is a cyclic number.

It is not a de Polignac number, because 42222238609 - 2³ = 42222238601 is a prime.

It is not a weakly prime, because it can be changed into another prime (42222238601) 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, 21111119304 + 21111119305.

It is an arithmetic number, because the mean of its divisors is an integer number (21111119305).

Almost surely, 2^42222238609 is an apocalyptic number.

It is an amenable number.

42222238609 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222238609 is an equidigital number, since it uses as much as digits as its factorization.

42222238609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 42222238609 in words is "forty-two billion, two hundred twenty-two million, two hundred thirty-eight thousand, six hundred nine".