121604339 has 2 divisors, whose sum is σ = 121604340. Its totient is φ = 121604338.

The previous prime is 121604309. The next prime is 121604359. The reversal of 121604339 is 933406121.

It is a strong prime.

It is an emirp because it is prime and its reverse (933406121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121604339 is a prime.

It is not a weakly prime, because it can be changed into another prime (121604309) 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 as a sum of consecutive naturals, namely, 60802169 + 60802170.

It is an arithmetic number, because the mean of its divisors is an integer number (60802170).

Almost surely, 2^121604339 is an apocalyptic number.

121604339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121604339 is an equidigital number, since it uses as much as digits as its factorization.

121604339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 121604339 is about 11027.4357400077. The cubic root of 121604339 is about 495.4308244596.

The spelling of 121604339 in words is "one hundred twenty-one million, six hundred four thousand, three hundred thirty-nine".