942438109 has 2 divisors, whose sum is σ = 942438110. Its totient is φ = 942438108.

The previous prime is 942438097. The next prime is 942438113. The reversal of 942438109 is 901834249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501312100 + 441126009 = 22390^2 + 21003^2 .

It is an emirp because it is prime and its reverse (901834249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 942438109 - 2²¹ = 940340957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (942438139) 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, 471219054 + 471219055.

It is an arithmetic number, because the mean of its divisors is an integer number (471219055).

Almost surely, 2^942438109 is an apocalyptic number.

It is an amenable number.

942438109 is a deficient number, since it is larger than the sum of its proper divisors (1).

942438109 is an equidigital number, since it uses as much as digits as its factorization.

942438109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 942438109 is about 30699.1548580739. The cubic root of 942438109 is about 980.4323057988.

The spelling of 942438109 in words is "nine hundred forty-two million, four hundred thirty-eight thousand, one hundred nine".