42784184089 has 2 divisors, whose sum is σ = 42784184090. Its totient is φ = 42784184088.

The previous prime is 42784184071. The next prime is 42784184207. The reversal of 42784184089 is 98048148724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42103756864 + 680427225 = 205192^2 + 26085^2 .

It is a cyclic number.

It is not a de Polignac number, because 42784184089 - 2¹¹ = 42784182041 is a prime.

It is a super-2 number, since 2×42784184089² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42784184489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21392092044 + 21392092045.

It is an arithmetic number, because the mean of its divisors is an integer number (21392092045).

Almost surely, 2^42784184089 is an apocalyptic number.

It is an amenable number.

42784184089 is a deficient number, since it is larger than the sum of its proper divisors (1).

42784184089 is an equidigital number, since it uses as much as digits as its factorization.

42784184089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 42784184089 in words is "forty-two billion, seven hundred eighty-four million, one hundred eighty-four thousand, eighty-nine".