42344450257 has 2 divisors, whose sum is σ = 42344450258. Its totient is φ = 42344450256.

The previous prime is 42344450231. The next prime is 42344450327. The reversal of 42344450257 is 75205444324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40465747921 + 1878702336 = 201161^2 + 43344^2 .

It is a cyclic number.

It is not a de Polignac number, because 42344450257 - 2⁷ = 42344450129 is a prime.

It is not a weakly prime, because it can be changed into another prime (42344451257) 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, 21172225128 + 21172225129.

It is an arithmetic number, because the mean of its divisors is an integer number (21172225129).

Almost surely, 2^42344450257 is an apocalyptic number.

It is an amenable number.

42344450257 is a deficient number, since it is larger than the sum of its proper divisors (1).

42344450257 is an equidigital number, since it uses as much as digits as its factorization.

42344450257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 40.

The spelling of 42344450257 in words is "forty-two billion, three hundred forty-four million, four hundred fifty thousand, two hundred fifty-seven".