121717248 has 80 divisors (see below), whose sum is σ = 327687360. Its totient is φ = 40144896.

The previous prime is 121717247. The next prime is 121717261. The reversal of 121717248 is 842717121.

It is not an unprimeable number, because it can be changed into a prime (121717247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167061 + ... + 167787.

It is an arithmetic number, because the mean of its divisors is an integer number (4096092).

Almost surely, 2^121717248 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 121717248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163843680).

121717248 is an abundant number, since it is smaller than the sum of its proper divisors (205970112).

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

121717248 is an equidigital number, since it uses as much as digits as its factorization.

121717248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 841 counting only the distinct ones).

The product of its digits is 6272, while the sum is 33.

The square root of 121717248 is about 11032.5540107447. The cubic root of 121717248 is about 495.5841120134.

The spelling of 121717248 in words is "one hundred twenty-one million, seven hundred seventeen thousand, two hundred forty-eight".