42743814439 has 2 divisors, whose sum is σ = 42743814440. Its totient is φ = 42743814438.

The previous prime is 42743814433. The next prime is 42743814481. The reversal of 42743814439 is 93441834724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42743814439 - 2²⁵ = 42710260007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42743814392 and 42743814401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42743814433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21371907219 + 21371907220.

It is an arithmetic number, because the mean of its divisors is an integer number (21371907220).

Almost surely, 2^42743814439 is an apocalyptic number.

42743814439 is a deficient number, since it is larger than the sum of its proper divisors (1).

42743814439 is an equidigital number, since it uses as much as digits as its factorization.

42743814439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 49.

The spelling of 42743814439 in words is "forty-two billion, seven hundred forty-three million, eight hundred fourteen thousand, four hundred thirty-nine".