121748847 has 16 divisors (see below), whose sum is σ = 180859392. Its totient is φ = 72216320.

The previous prime is 121748807. The next prime is 121748909. The reversal of 121748847 is 748847121.

It is not a de Polignac number, because 121748847 - 2⁷ = 121748719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121748799 and 121748808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121748807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37698 + ... + 40799.

It is an arithmetic number, because the mean of its divisors is an integer number (11303712).

Almost surely, 2^121748847 is an apocalyptic number.

121748847 is a deficient number, since it is larger than the sum of its proper divisors (59110545).

121748847 is a wasteful number, since it uses less digits than its factorization.

121748847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78558.

The product of its digits is 100352, while the sum is 42.

The square root of 121748847 is about 11033.9859978160. The cubic root of 121748847 is about 495.6269944798.

The spelling of 121748847 in words is "one hundred twenty-one million, seven hundred forty-eight thousand, eight hundred forty-seven".