121242866 has 8 divisors (see below), whose sum is σ = 184425984. Its totient is φ = 59767540.

The previous prime is 121242851. The next prime is 121242871. The reversal of 121242866 is 668242121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 426770 + ... + 427053.

It is an arithmetic number, because the mean of its divisors is an integer number (23053248).

Almost surely, 2^121242866 is an apocalyptic number.

121242866 is a deficient number, since it is larger than the sum of its proper divisors (63183118).

121242866 is an equidigital number, since it uses as much as digits as its factorization.

121242866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853896.

The product of its digits is 9216, while the sum is 32.

The square root of 121242866 is about 11011.0338297546. The cubic root of 121242866 is about 494.9394423078.

Adding to 121242866 its reverse (668242121), we get a palindrome (789484987).

The spelling of 121242866 in words is "one hundred twenty-one million, two hundred forty-two thousand, eight hundred sixty-six".