102000247 has 2 divisors, whose sum is σ = 102000248. Its totient is φ = 102000246.

The previous prime is 102000209. The next prime is 102000259. The reversal of 102000247 is 742000201.

It is a strong prime.

It is an emirp because it is prime and its reverse (742000201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102000247 is a prime.

It is a super-2 number, since 2×102000247² = 20808100776122018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102000247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102000287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000123 + 51000124.

It is an arithmetic number, because the mean of its divisors is an integer number (51000124).

Almost surely, 2^102000247 is an apocalyptic number.

102000247 is a deficient number, since it is larger than the sum of its proper divisors (1).

102000247 is an equidigital number, since it uses as much as digits as its factorization.

102000247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 102000247 is about 10099.5171666768. The cubic root of 102000247 is about 467.2332499807.

Adding to 102000247 its reverse (742000201), we get a palindrome (844000448).

The spelling of 102000247 in words is "one hundred two million, two hundred forty-seven", and thus it is an aban number.