121310756 has 12 divisors (see below), whose sum is σ = 242621568. Its totient is φ = 51990312.

The previous prime is 121310737. The next prime is 121310773. The reversal of 121310756 is 657013121.

121310756 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2166236 + ... + 2166291.

It is an arithmetic number, because the mean of its divisors is an integer number (20218464).

Almost surely, 2^121310756 is an apocalyptic number.

It is an amenable number.

121310756 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121310756 is a wasteful number, since it uses less digits than its factorization.

121310756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332538 (or 4332536 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 121310756 is about 11014.1162151123. The cubic root of 121310756 is about 495.0318055950.

Adding to 121310756 its reverse (657013121), we get a palindrome (778323877).

The spelling of 121310756 in words is "one hundred twenty-one million, three hundred ten thousand, seven hundred fifty-six".