121490688 has 144 divisors (see below), whose sum is σ = 359384256. Its totient is φ = 36126720.

The previous prime is 121490671. The next prime is 121490717. The reversal of 121490688 is 886094121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616606 + ... + 616802.

It is an arithmetic number, because the mean of its divisors is an integer number (2495724).

Almost surely, 2^121490688 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 121490688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179692128).

121490688 is an abundant number, since it is smaller than the sum of its proper divisors (237893568).

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

121490688 is a wasteful number, since it uses less digits than its factorization.

121490688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 121490688 is about 11022.2814335327. The cubic root of 121490688 is about 495.2764336996.

The spelling of 121490688 in words is "one hundred twenty-one million, four hundred ninety thousand, six hundred eighty-eight".