42340434247 has 2 divisors, whose sum is σ = 42340434248. Its totient is φ = 42340434246.

The previous prime is 42340434163. The next prime is 42340434263. The reversal of 42340434247 is 74243404324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42340434247 - 2²⁷ = 42206216519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42340434287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21170217123 + 21170217124.

It is an arithmetic number, because the mean of its divisors is an integer number (21170217124).

Almost surely, 2^42340434247 is an apocalyptic number.

42340434247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42340434247 is an equidigital number, since it uses as much as digits as its factorization.

42340434247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 37.

The spelling of 42340434247 in words is "forty-two billion, three hundred forty million, four hundred thirty-four thousand, two hundred forty-seven".