42194179 has 2 divisors, whose sum is σ = 42194180. Its totient is φ = 42194178.

The previous prime is 42194161. The next prime is 42194189. The reversal of 42194179 is 97149124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42194179 - 2¹⁷ = 42063107 is a prime.

It is not a weakly prime, because it can be changed into another prime (42194189) 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, 21097089 + 21097090.

It is an arithmetic number, because the mean of its divisors is an integer number (21097090).

Almost surely, 2^42194179 is an apocalyptic number.

42194179 is a deficient number, since it is larger than the sum of its proper divisors (1).

42194179 is an equidigital number, since it uses as much as digits as its factorization.

42194179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 42194179 is about 6495.7046576950. The cubic root of 42194179 is about 348.1375326163.

It can be divided in two parts, 42 and 194179, that multiplied together give a palindrome (8155518).

The spelling of 42194179 in words is "forty-two million, one hundred ninety-four thousand, one hundred seventy-nine".