121905336 has 96 divisors (see below), whose sum is σ = 370016640. Its totient is φ = 33308352.

The previous prime is 121905323. The next prime is 121905379. The reversal of 121905336 is 633509121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24795 + ... + 29301.

It is an arithmetic number, because the mean of its divisors is an integer number (3854340).

Almost surely, 2^121905336 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 121905336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185008320).

121905336 is an abundant number, since it is smaller than the sum of its proper divisors (248111304).

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

121905336 is a wasteful number, since it uses less digits than its factorization.

121905336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 121905336 is about 11041.0749476670. The cubic root of 121905336 is about 495.8392537548.

The spelling of 121905336 in words is "one hundred twenty-one million, nine hundred five thousand, three hundred thirty-six".