121208406 has 32 divisors (see below), whose sum is σ = 265130496. Its totient is φ = 36636000.

The previous prime is 121208389. The next prime is 121208447. The reversal of 121208406 is 604802121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26316 + ... + 30576.

It is an arithmetic number, because the mean of its divisors is an integer number (8285328).

Almost surely, 2^121208406 is an apocalyptic number.

121208406 is an abundant number, since it is smaller than the sum of its proper divisors (143922090).

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

121208406 is a wasteful number, since it uses less digits than its factorization.

121208406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 121208406 is about 11009.4689245213. The cubic root of 121208406 is about 494.8925468220.

The spelling of 121208406 in words is "one hundred twenty-one million, two hundred eight thousand, four hundred six".