121057756 has 6 divisors (see below), whose sum is σ = 211851080. Its totient is φ = 60528876.

The previous prime is 121057751. The next prime is 121057813. The reversal of 121057756 is 657750121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121057751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15132216 + ... + 15132223.

Almost surely, 2^121057756 is an apocalyptic number.

It is an amenable number.

121057756 is a deficient number, since it is larger than the sum of its proper divisors (90793324).

121057756 is a wasteful number, since it uses less digits than its factorization.

121057756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30264443 (or 30264441 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 121057756 is about 11002.6249595267. The cubic root of 121057756 is about 494.6874277372.

The spelling of 121057756 in words is "one hundred twenty-one million, fifty-seven thousand, seven hundred fifty-six".