84145027 has 2 divisors, whose sum is σ = 84145028. Its totient is φ = 84145026.

The previous prime is 84145013. The next prime is 84145049. The reversal of 84145027 is 72054148.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84145027 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84145027.

It is not a weakly prime, because it can be changed into another prime (84145097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42072513 + 42072514.

It is an arithmetic number, because the mean of its divisors is an integer number (42072514).

Almost surely, 2^84145027 is an apocalyptic number.

84145027 is a deficient number, since it is larger than the sum of its proper divisors (1).

84145027 is an equidigital number, since it uses as much as digits as its factorization.

84145027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 84145027 is about 9173.0598493632. The cubic root of 84145027 is about 438.2038121404.

The spelling of 84145027 in words is "eighty-four million, one hundred forty-five thousand, twenty-seven".