121926240 has 144 divisors (see below), whose sum is σ = 419026608. Its totient is φ = 32283648.

The previous prime is 121926239. The next prime is 121926257. The reversal of 121926240 is 42629121.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326694 + ... + 327066.

It is an arithmetic number, because the mean of its divisors is an integer number (2909907).

Almost surely, 2^121926240 is an apocalyptic number.

121926240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121926240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209513304).

121926240 is an abundant number, since it is smaller than the sum of its proper divisors (297100368).

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

121926240 is a wasteful number, since it uses less digits than its factorization.

121926240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 121926240 is about 11042.0215540453. The cubic root of 121926240 is about 495.8675938633.

The spelling of 121926240 in words is "one hundred twenty-one million, nine hundred twenty-six thousand, two hundred forty".