121757967 has 12 divisors (see below), whose sum is σ = 176278960. Its totient is φ = 80984448.

The previous prime is 121757957. The next prime is 121757981. The reversal of 121757967 is 769757121.

121757967 is a `hidden beast` number, since 1 + 2 + 17 + 579 + 67 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-121757967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121757917) 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 11 ways as a sum of consecutive naturals, for example, 11458 + ... + 19359.

Almost surely, 2^121757967 is an apocalyptic number.

121757967 is a deficient number, since it is larger than the sum of its proper divisors (54520993).

121757967 is a wasteful number, since it uses less digits than its factorization.

121757967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31262 (or 31259 counting only the distinct ones).

The product of its digits is 185220, while the sum is 45.

The square root of 121757967 is about 11034.3992586819. The cubic root of 121757967 is about 495.6393696971.

The spelling of 121757967 in words is "one hundred twenty-one million, seven hundred fifty-seven thousand, nine hundred sixty-seven".