42780125627 has 2 divisors, whose sum is σ = 42780125628. Its totient is φ = 42780125626.

The previous prime is 42780125623. The next prime is 42780125693. The reversal of 42780125627 is 72652108724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42780125627 - 2² = 42780125623 is a prime.

It is not a weakly prime, because it can be changed into another prime (42780125623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21390062813 + 21390062814.

It is an arithmetic number, because the mean of its divisors is an integer number (21390062814).

Almost surely, 2^42780125627 is an apocalyptic number.

42780125627 is a deficient number, since it is larger than the sum of its proper divisors (1).

42780125627 is an equidigital number, since it uses as much as digits as its factorization.

42780125627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 42780125627 in words is "forty-two billion, seven hundred eighty million, one hundred twenty-five thousand, six hundred twenty-seven".