42122142422989 has 2 divisors, whose sum is σ = 42122142422990. Its totient is φ = 42122142422988.

The previous prime is 42122142422963. The next prime is 42122142422993. The reversal of 42122142422989 is 98922424122124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41691751317225 + 430391105764 = 6456915^2 + 656042^2 .

It is a cyclic number.

It is not a de Polignac number, because 42122142422989 - 2⁵ = 42122142422957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42122142422909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061071211494 + 21061071211495.

It is an arithmetic number, because the mean of its divisors is an integer number (21061071211495).

Almost surely, 2^{42122142422989} is an apocalyptic number.

It is an amenable number.

42122142422989 is a deficient number, since it is larger than the sum of its proper divisors (1).

42122142422989 is an equidigital number, since it uses as much as digits as its factorization.

42122142422989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2654208, while the sum is 52.

The spelling of 42122142422989 in words is "forty-two trillion, one hundred twenty-two billion, one hundred forty-two million, four hundred twenty-two thousand, nine hundred eighty-nine".