102947 has 4 divisors (see below), whose sum is σ = 110880. Its totient is φ = 95016.

The previous prime is 102931. The next prime is 102953. The reversal of 102947 is 749201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749201 = 293 ⋅2557.

It is a cyclic number.

It is not a de Polignac number, because 102947 - 2⁴ = 102931 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102947.

It is not an unprimeable number, because it can be changed into a prime (102967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947 + ... + 3972.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2¹⁰²⁹⁴⁷ is an apocalyptic number.

102947 is a deficient number, since it is larger than the sum of its proper divisors (7933).

102947 is an equidigital number, since it uses as much as digits as its factorization.

102947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7932.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 102947 is about 320.8535491466. The cubic root of 102947 is about 46.8674399660.

It can be divided in two parts, 10294 and 7, that added together give a palindrome (10301).

The spelling of 102947 in words is "one hundred two thousand, nine hundred forty-seven".