122858 has 8 divisors (see below), whose sum is σ = 188352. Its totient is φ = 60076.

The previous prime is 122849. The next prime is 122861. The reversal of 122858 is 858221.

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

It is an unprimeable number.

122858 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, 560 + ... + 747.

It is an arithmetic number, because the mean of its divisors is an integer number (23544).

2¹²²⁸⁵⁸ is an apocalyptic number.

122858 is a deficient number, since it is larger than the sum of its proper divisors (65494).

122858 is a wasteful number, since it uses less digits than its factorization.

122858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its digits is 1280, while the sum is 26.

The square root of 122858 is about 350.5110554605. The cubic root of 122858 is about 49.7127529427.

The spelling of 122858 in words is "one hundred twenty-two thousand, eight hundred fifty-eight".