122418 has 16 divisors (see below), whose sum is σ = 272160. Its totient is φ = 40788.

The previous prime is 122401. The next prime is 122443. The reversal of 122418 is 814221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122418.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2¹²²⁴¹⁸ is an apocalyptic number.

122418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122418 is an abundant number, since it is smaller than the sum of its proper divisors (149742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122418 is a wasteful number, since it uses less digits than its factorization.

122418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278 (or 2272 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 122418 is about 349.8828375328. The cubic root of 122418 is about 49.6533353607.

Adding to 122418 its reverse (814221), we get a palindrome (936639).

The spelling of 122418 in words is "one hundred twenty-two thousand, four hundred eighteen".