121556706 has 16 divisors (see below), whose sum is σ = 243584544. Its totient is φ = 40440384.

The previous prime is 121556689. The next prime is 121556717. The reversal of 121556706 is 607655121.

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 7 ways as a sum of consecutive naturals, for example, 16231 + ... + 22506.

It is an arithmetic number, because the mean of its divisors is an integer number (15224034).

Almost surely, 2^121556706 is an apocalyptic number.

121556706 is an abundant number, since it is smaller than the sum of its proper divisors (122027838).

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

121556706 is a wasteful number, since it uses less digits than its factorization.

121556706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39265.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 121556706 is about 11025.2757788638. The cubic root of 121556706 is about 495.3661284720.

The spelling of 121556706 in words is "one hundred twenty-one million, five hundred fifty-six thousand, seven hundred six".