121838944 has 72 divisors (see below), whose sum is σ = 259232400. Its totient is φ = 56339712.

The previous prime is 121838933. The next prime is 121838957. The reversal of 121838944 is 449838121.

It is a junction number, because it is equal to n+sod(n) for n = 121838897 and 121838906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612157 + ... + 612355.

It is an arithmetic number, because the mean of its divisors is an integer number (3600450).

Almost surely, 2^121838944 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 121838944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129616200).

121838944 is an abundant number, since it is smaller than the sum of its proper divisors (137393456).

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

121838944 is a wasteful number, since it uses less digits than its factorization.

121838944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 273 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 121838944 is about 11038.0679468827. The cubic root of 121838944 is about 495.7492228645.

The spelling of 121838944 in words is "one hundred twenty-one million, eight hundred thirty-eight thousand, nine hundred forty-four".