102247147 has 2 divisors, whose sum is σ = 102247148. Its totient is φ = 102247146.

The previous prime is 102247139. The next prime is 102247181. The reversal of 102247147 is 741742201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102247147 - 2³ = 102247139 is a prime.

It is not a weakly prime, because it can be changed into another prime (102247447) 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, 51123573 + 51123574.

It is an arithmetic number, because the mean of its divisors is an integer number (51123574).

Almost surely, 2^102247147 is an apocalyptic number.

102247147 is a deficient number, since it is larger than the sum of its proper divisors (1).

102247147 is an equidigital number, since it uses as much as digits as its factorization.

102247147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 102247147 is about 10111.7331353235. The cubic root of 102247147 is about 467.6099383987.

Adding to 102247147 its reverse (741742201), we get a palindrome (843989348).

It can be divided in two parts, 10224 and 7147, that added together give a palindrome (17371).

The spelling of 102247147 in words is "one hundred two million, two hundred forty-seven thousand, one hundred forty-seven".