121347408 has 120 divisors (see below), whose sum is σ = 388123968. Its totient is φ = 31988736.

The previous prime is 121347403. The next prime is 121347439. The reversal of 121347408 is 804743121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121347403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55716 + ... + 57852.

Almost surely, 2^121347408 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 121347408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194061984).

121347408 is an abundant number, since it is smaller than the sum of its proper divisors (266776560).

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

121347408 is a wasteful number, since it uses less digits than its factorization.

121347408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 121347408 is about 11015.7799542293. The cubic root of 121347408 is about 495.0816557467.

The spelling of 121347408 in words is "one hundred twenty-one million, three hundred forty-seven thousand, four hundred eight".