121028418 has 40 divisors (see below), whose sum is σ = 309938112. Its totient is φ = 34579224.

The previous prime is 121028363. The next prime is 121028419. The reversal of 121028418 is 814820121.

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 = 121028391 and 121028400.

It is not an unprimeable number, because it can be changed into a prime (121028419) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52230 + ... + 54497.

Almost surely, 2^121028418 is an apocalyptic number.

121028418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121028418 is an abundant number, since it is smaller than the sum of its proper divisors (188909694).

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

121028418 is a wasteful number, since it uses less digits than its factorization.

121028418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106748 (or 106739 counting only the distinct ones).

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

The square root of 121028418 is about 11001.2916514380. The cubic root of 121028418 is about 494.6474624821.

Adding to 121028418 its reverse (814820121), we get a palindrome (935848539).

The spelling of 121028418 in words is "one hundred twenty-one million, twenty-eight thousand, four hundred eighteen".