42212577917 has 2 divisors, whose sum is σ = 42212577918. Its totient is φ = 42212577916.

The previous prime is 42212577877. The next prime is 42212577931. The reversal of 42212577917 is 71977521224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37553013796 + 4659564121 = 193786^2 + 68261^2 .

It is a cyclic number.

It is not a de Polignac number, because 42212577917 - 2¹⁰ = 42212576893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42212577997) 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, 21106288958 + 21106288959.

It is an arithmetic number, because the mean of its divisors is an integer number (21106288959).

Almost surely, 2^42212577917 is an apocalyptic number.

It is an amenable number.

42212577917 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212577917 is an equidigital number, since it uses as much as digits as its factorization.

42212577917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 47.

The spelling of 42212577917 in words is "forty-two billion, two hundred twelve million, five hundred seventy-seven thousand, nine hundred seventeen".