42340049 has 2 divisors, whose sum is σ = 42340050. Its totient is φ = 42340048.

The previous prime is 42340027. The next prime is 42340093. The reversal of 42340049 is 94004324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29235649 + 13104400 = 5407^2 + 3620^2 .

It is a cyclic number.

It is not a de Polignac number, because 42340049 - 2¹⁶ = 42274513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42340009) 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, 21170024 + 21170025.

It is an arithmetic number, because the mean of its divisors is an integer number (21170025).

Almost surely, 2^42340049 is an apocalyptic number.

It is an amenable number.

42340049 is a deficient number, since it is larger than the sum of its proper divisors (1).

42340049 is an equidigital number, since it uses as much as digits as its factorization.

42340049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42340049 is about 6506.9231592205. The cubic root of 42340049 is about 348.5382546637.

The spelling of 42340049 in words is "forty-two million, three hundred forty thousand, forty-nine".