1198422420 has 48 divisors (see below), whose sum is σ = 3613706880. Its totient is φ = 294996096.

The previous prime is 1198422391. The next prime is 1198422451. The reversal of 1198422420 is 242248911.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767440 + ... + 768999.

It is an arithmetic number, because the mean of its divisors is an integer number (75285560).

Almost surely, 2^1198422420 is an apocalyptic number.

1198422420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198422420 is an abundant number, since it is smaller than the sum of its proper divisors (2415284460).

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

1198422420 is a wasteful number, since it uses less digits than its factorization.

1198422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536464 (or 1536462 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1198422420 is about 34618.2382567340. The cubic root of 1198422420 is about 1062.1926902710.

The spelling of 1198422420 in words is "one billion, one hundred ninety-eight million, four hundred twenty-two thousand, four hundred twenty".