121378008 has 32 divisors (see below), whose sum is σ = 304819200. Its totient is φ = 40276128.

The previous prime is 121378001. The next prime is 121378009. The reversal of 121378008 is 800873121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121378001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5988 + ... + 16691.

It is an arithmetic number, because the mean of its divisors is an integer number (9525600).

Almost surely, 2^121378008 is an apocalyptic number.

It is an amenable number.

121378008 is an abundant number, since it is smaller than the sum of its proper divisors (183441192).

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

121378008 is a wasteful number, since it uses less digits than its factorization.

121378008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22911 (or 22907 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 121378008 is about 11017.1687833127. The cubic root of 121378008 is about 495.1232669237.

The spelling of 121378008 in words is "one hundred twenty-one million, three hundred seventy-eight thousand, eight".