42780267587 has 2 divisors, whose sum is σ = 42780267588. Its totient is φ = 42780267586.

The previous prime is 42780267577. The next prime is 42780267671. The reversal of 42780267587 is 78576208724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42780267587 - 2¹⁶ = 42780202051 is a prime.

It is not a weakly prime, because it can be changed into another prime (42780267547) 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, 21390133793 + 21390133794.

It is an arithmetic number, because the mean of its divisors is an integer number (21390133794).

Almost surely, 2^42780267587 is an apocalyptic number.

42780267587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42780267587 is an equidigital number, since it uses as much as digits as its factorization.

42780267587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 42780267587 in words is "forty-two billion, seven hundred eighty million, two hundred sixty-seven thousand, five hundred eighty-seven".