122798 has 8 divisors (see below), whose sum is σ = 198408. Its totient is φ = 56664.

The previous prime is 122789. The next prime is 122819. The reversal of 122798 is 897221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 122798.

It is a congruent number.

It is an unprimeable number.

122798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 2336 + ... + 2387.

It is an arithmetic number, because the mean of its divisors is an integer number (24801).

2¹²²⁷⁹⁸ is an apocalyptic number.

122798 is a deficient number, since it is larger than the sum of its proper divisors (75610).

122798 is a wasteful number, since it uses less digits than its factorization.

122798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738.

The product of its digits is 2016, while the sum is 29.

The square root of 122798 is about 350.4254556964. The cubic root of 122798 is about 49.7046589077.

The spelling of 122798 in words is "one hundred twenty-two thousand, seven hundred ninety-eight".