121608740 has 96 divisors (see below), whose sum is σ = 299980800. Its totient is φ = 40936320.

The previous prime is 121608733. The next prime is 121608743. The reversal of 121608740 is 47806121.

It is not an unprimeable number, because it can be changed into a prime (121608743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196151 + ... + 196769.

It is an arithmetic number, because the mean of its divisors is an integer number (3124800).

Almost surely, 2^121608740 is an apocalyptic number.

121608740 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 121608740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149990400).

121608740 is an abundant number, since it is smaller than the sum of its proper divisors (178372060).

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

121608740 is a wasteful number, since it uses less digits than its factorization.

121608740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 121608740 is about 11027.6352859532. The cubic root of 121608740 is about 495.4368011234.

The spelling of 121608740 in words is "one hundred twenty-one million, six hundred eight thousand, seven hundred forty".