122158 has 8 divisors (see below), whose sum is σ = 185328. Its totient is φ = 60384.

The previous prime is 122149. The next prime is 122167. The reversal of 122158 is 851221.

122158 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (122149) and next prime (122167).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (23166).

2¹²²¹⁵⁸ is an apocalyptic number.

122158 is a deficient number, since it is larger than the sum of its proper divisors (63170).

122158 is a wasteful number, since it uses less digits than its factorization.

122158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698.

The product of its digits is 160, while the sum is 19.

The square root of 122158 is about 349.5110870917. The cubic root of 122158 is about 49.6181580239.

Adding to 122158 its reverse (851221), we get a palindrome (973379).

The spelling of 122158 in words is "one hundred twenty-two thousand, one hundred fifty-eight".