102819047 has 2 divisors, whose sum is σ = 102819048. Its totient is φ = 102819046.

The previous prime is 102818999. The next prime is 102819091. The reversal of 102819047 is 740918201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102819047 - 2⁶ = 102818983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102819097) 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, 51409523 + 51409524.

It is an arithmetic number, because the mean of its divisors is an integer number (51409524).

Almost surely, 2^102819047 is an apocalyptic number.

102819047 is a deficient number, since it is larger than the sum of its proper divisors (1).

102819047 is an equidigital number, since it uses as much as digits as its factorization.

102819047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 102819047 is about 10139.9727317188. The cubic root of 102819047 is about 468.4801470911.

The spelling of 102819047 in words is "one hundred two million, eight hundred nineteen thousand, forty-seven".