121975927 has 2 divisors, whose sum is σ = 121975928. Its totient is φ = 121975926.

The previous prime is 121975897. The next prime is 121975957. The reversal of 121975927 is 729579121.

It is a balanced prime because it is at equal distance from previous prime (121975897) and next prime (121975957).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121975927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121975957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60987963 + 60987964.

It is an arithmetic number, because the mean of its divisors is an integer number (60987964).

Almost surely, 2^121975927 is an apocalyptic number.

121975927 is a deficient number, since it is larger than the sum of its proper divisors (1).

121975927 is an equidigital number, since it uses as much as digits as its factorization.

121975927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 43.

The square root of 121975927 is about 11044.2712299183. The cubic root of 121975927 is about 495.9349428525.

The spelling of 121975927 in words is "one hundred twenty-one million, nine hundred seventy-five thousand, nine hundred twenty-seven".