121849998 has 32 divisors (see below), whose sum is σ = 255902976. Its totient is φ = 38605248.

The previous prime is 121849957. The next prime is 121850011. The reversal of 121849998 is 899948121.

It is a self number, because there is not a number n which added to its sum of digits gives 121849998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19786 + ... + 25202.

It is an arithmetic number, because the mean of its divisors is an integer number (7996968).

Almost surely, 2^121849998 is an apocalyptic number.

121849998 is an abundant number, since it is smaller than the sum of its proper divisors (134052978).

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

121849998 is a wasteful number, since it uses less digits than its factorization.

121849998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608.

The product of its digits is 373248, while the sum is 51.

The square root of 121849998 is about 11038.5686572128. The cubic root of 121849998 is about 495.7642149133.

The spelling of 121849998 in words is "one hundred twenty-one million, eight hundred forty-nine thousand, nine hundred ninety-eight".