121865794 has 4 divisors (see below), whose sum is σ = 182798694. Its totient is φ = 60932896.

The previous prime is 121865773. The next prime is 121865803. The reversal of 121865794 is 497568121.

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

It can be written as a sum of positive squares in only one way, i.e., 119093569 + 2772225 = 10913^2 + 1665^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121865794.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30466447 + ... + 30466450.

Almost surely, 2^121865794 is an apocalyptic number.

121865794 is a deficient number, since it is larger than the sum of its proper divisors (60932900).

121865794 is an equidigital number, since it uses as much as digits as its factorization.

121865794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60932899.

The product of its digits is 120960, while the sum is 43.

The square root of 121865794 is about 11039.2841253407. The cubic root of 121865794 is about 495.7856367524.

The spelling of 121865794 in words is "one hundred twenty-one million, eight hundred sixty-five thousand, seven hundred ninety-four".