102406247 has 2 divisors, whose sum is σ = 102406248. Its totient is φ = 102406246.

The previous prime is 102406141. The next prime is 102406253. The reversal of 102406247 is 742604201.

It is a strong prime.

It is an emirp because it is prime and its reverse (742604201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102406247 - 2¹⁴ = 102389863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102403247) 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, 51203123 + 51203124.

It is an arithmetic number, because the mean of its divisors is an integer number (51203124).

Almost surely, 2^102406247 is an apocalyptic number.

102406247 is a deficient number, since it is larger than the sum of its proper divisors (1).

102406247 is an equidigital number, since it uses as much as digits as its factorization.

102406247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 102406247 is about 10119.5971757773. The cubic root of 102406247 is about 467.8523516387.

The spelling of 102406247 in words is "one hundred two million, four hundred six thousand, two hundred forty-seven".