12420198 has 24 divisors (see below), whose sum is σ = 30755088. Its totient is φ = 3548592.

The previous prime is 12420151. The next prime is 12420211. The reversal of 12420198 is 89102421.

12420198 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12420198² = 308522636718408, which contains 22 as substring.

12420198 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49161 + ... + 49412.

It is an arithmetic number, because the mean of its divisors is an integer number (1281462).

Almost surely, 2^12420198 is an apocalyptic number.

12420198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12420198 is an abundant number, since it is smaller than the sum of its proper divisors (18334890).

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

12420198 is a wasteful number, since it uses less digits than its factorization.

12420198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98588 (or 98585 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12420198 is about 3524.2301286948. The cubic root of 12420198 is about 231.5845095101.

The spelling of 12420198 in words is "twelve million, four hundred twenty thousand, one hundred ninety-eight".