42128167989619 has 2 divisors, whose sum is σ = 42128167989620. Its totient is φ = 42128167989618.

The previous prime is 42128167989599. The next prime is 42128167989631. The reversal of 42128167989619 is 91698976182124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42128167989619 - 2²⁷ = 42128033771891 is a prime.

It is a super-2 number, since 2×42128167989619² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42128167989679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21064083994809 + 21064083994810.

It is an arithmetic number, because the mean of its divisors is an integer number (21064083994810).

Almost surely, 2^{42128167989619} is an apocalyptic number.

42128167989619 is a deficient number, since it is larger than the sum of its proper divisors (1).

42128167989619 is an equidigital number, since it uses as much as digits as its factorization.

42128167989619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188116992, while the sum is 73.

The spelling of 42128167989619 in words is "forty-two trillion, one hundred twenty-eight billion, one hundred sixty-seven million, nine hundred eighty-nine thousand, six hundred nineteen".