42856127879 has 2 divisors, whose sum is σ = 42856127880. Its totient is φ = 42856127878.

The previous prime is 42856127869. The next prime is 42856127887. The reversal of 42856127879 is 97872165824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42856127879 - 2⁸ = 42856127623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42856127869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21428063939 + 21428063940.

It is an arithmetic number, because the mean of its divisors is an integer number (21428063940).

Almost surely, 2^42856127879 is an apocalyptic number.

42856127879 is a deficient number, since it is larger than the sum of its proper divisors (1).

42856127879 is an equidigital number, since it uses as much as digits as its factorization.

42856127879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 59.

The spelling of 42856127879 in words is "forty-two billion, eight hundred fifty-six million, one hundred twenty-seven thousand, eight hundred seventy-nine".