121428098 has 12 divisors (see below), whose sum is σ = 200206230. Its totient is φ = 55194480.

The previous prime is 121428089. The next prime is 121428103. The reversal of 121428098 is 890824121.

It can be written as a sum of positive squares in only one way, i.e., 116920969 + 4507129 = 10813^2 + 2123^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 250643 + ... + 251126.

Almost surely, 2^121428098 is an apocalyptic number.

121428098 is a deficient number, since it is larger than the sum of its proper divisors (78778132).

121428098 is a wasteful number, since it uses less digits than its factorization.

121428098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501793 (or 501782 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 121428098 is about 11019.4418188945. The cubic root of 121428098 is about 495.1913663377.

The spelling of 121428098 in words is "one hundred twenty-one million, four hundred twenty-eight thousand, ninety-eight".