122840118 has 16 divisors (see below), whose sum is σ = 272978160. Its totient is φ = 40946688.

The previous prime is 122840101. The next prime is 122840119. The reversal of 122840118 is 811048221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 122840091 and 122840100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122840119) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1137355 + ... + 1137462.

It is an arithmetic number, because the mean of its divisors is an integer number (17061135).

Almost surely, 2^122840118 is an apocalyptic number.

122840118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122840118 is an abundant number, since it is smaller than the sum of its proper divisors (150138042).

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

122840118 is a wasteful number, since it uses less digits than its factorization.

122840118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274828 (or 2274822 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 122840118 is about 11083.3261253109. The cubic root of 122840118 is about 497.1034092616.

Adding to 122840118 its reverse (811048221), we get a palindrome (933888339).

The spelling of 122840118 in words is "one hundred twenty-two million, eight hundred forty thousand, one hundred eighteen".