122847 has 4 divisors (see below), whose sum is σ = 163800. Its totient is φ = 81896.

The previous prime is 122839. The next prime is 122849. The reversal of 122847 is 748221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122847 - 2³ = 122839 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20472 + ... + 20477.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2¹²²⁸⁴⁷ is an apocalyptic number.

122847 is a deficient number, since it is larger than the sum of its proper divisors (40953).

122847 is an equidigital number, since it uses as much as digits as its factorization.

122847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40952.

The product of its digits is 896, while the sum is 24.

The square root of 122847 is about 350.4953637354. The cubic root of 122847 is about 49.7112692336.

It can be divided in two parts, 1228 and 47, that added together give a triangular number (1275 = T₅₀).

The spelling of 122847 in words is "one hundred twenty-two thousand, eight hundred forty-seven".