121498864 has 80 divisors (see below), whose sum is σ = 262617120. Its totient is φ = 54190080.

The previous prime is 121498841. The next prime is 121498891. The reversal of 121498864 is 468894121.

It is a self number, because there is not a number n which added to its sum of digits gives 121498864.

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, 575719 + ... + 575929.

It is an arithmetic number, because the mean of its divisors is an integer number (3282714).

Almost surely, 2^121498864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121498864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131308560).

121498864 is an abundant number, since it is smaller than the sum of its proper divisors (141118256).

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

121498864 is a wasteful number, since it uses less digits than its factorization.

121498864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 332 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 121498864 is about 11022.6523123974. The cubic root of 121498864 is about 495.2875437124.

The spelling of 121498864 in words is "one hundred twenty-one million, four hundred ninety-eight thousand, eight hundred sixty-four".