122747 has 4 divisors (see below), whose sum is σ = 123816. Its totient is φ = 121680.

The previous prime is 122743. The next prime is 122753. The reversal of 122747 is 747221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 747221 = 197 ⋅3793.

It is a cyclic number.

It is not a de Polignac number, because 122747 - 2² = 122743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122741) 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, 338 + ... + 599.

It is an arithmetic number, because the mean of its divisors is an integer number (30954).

2¹²²⁷⁴⁷ is an apocalyptic number.

122747 is a deficient number, since it is larger than the sum of its proper divisors (1069).

122747 is an equidigital number, since it uses as much as digits as its factorization.

122747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068.

The product of its digits is 784, while the sum is 23.

The square root of 122747 is about 350.3526794531. The cubic root of 122747 is about 49.6977769046.

Adding to 122747 its reverse (747221), we get a palindrome (869968).

The spelling of 122747 in words is "one hundred twenty-two thousand, seven hundred forty-seven", and thus it is an iban number.