121463791 has 2 divisors, whose sum is σ = 121463792. Its totient is φ = 121463790.

The previous prime is 121463779. The next prime is 121463807. The reversal of 121463791 is 197364121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121463791 - 2⁷ = 121463663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121463191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60731895 + 60731896.

It is an arithmetic number, because the mean of its divisors is an integer number (60731896).

Almost surely, 2^121463791 is an apocalyptic number.

121463791 is a deficient number, since it is larger than the sum of its proper divisors (1).

121463791 is an equidigital number, since it uses as much as digits as its factorization.

121463791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 121463791 is about 11021.0612465406. The cubic root of 121463791 is about 495.2398810121.

The spelling of 121463791 in words is "one hundred twenty-one million, four hundred sixty-three thousand, seven hundred ninety-one".