121478683 has 4 divisors (see below), whose sum is σ = 121520728. Its totient is φ = 121436640.

The previous prime is 121478653. The next prime is 121478689. The reversal of 121478683 is 386874121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121478683 - 2²⁵ = 87924251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121478689) 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 3 ways as a sum of consecutive naturals, for example, 16341 + ... + 22582.

It is an arithmetic number, because the mean of its divisors is an integer number (30380182).

Almost surely, 2^121478683 is an apocalyptic number.

121478683 is a deficient number, since it is larger than the sum of its proper divisors (42045).

121478683 is an equidigital number, since it uses as much as digits as its factorization.

121478683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42044.

The product of its digits is 64512, while the sum is 40.

The square root of 121478683 is about 11021.7368413513. The cubic root of 121478683 is about 495.2601197210.

It can be divided in two parts, 1214 and 78683, that added together give a palindrome (79897).

The spelling of 121478683 in words is "one hundred twenty-one million, four hundred seventy-eight thousand, six hundred eighty-three".