42116189 has 2 divisors, whose sum is σ = 42116190. Its totient is φ = 42116188.

The previous prime is 42116167. The next prime is 42116209. The reversal of 42116189 is 98161124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 13579225 = 5342^2 + 3685^2 .

It is a cyclic number.

It is not a de Polignac number, because 42116189 - 2⁸ = 42115933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42116119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21058094 + 21058095.

It is an arithmetic number, because the mean of its divisors is an integer number (21058095).

Almost surely, 2^42116189 is an apocalyptic number.

It is an amenable number.

42116189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42116189 is an equidigital number, since it uses as much as digits as its factorization.

42116189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 42116189 is about 6489.6986832980. The cubic root of 42116189 is about 347.9229059196.

The spelling of 42116189 in words is "forty-two million, one hundred sixteen thousand, one hundred eighty-nine".