121598039 has 2 divisors, whose sum is σ = 121598040. Its totient is φ = 121598038.

The previous prime is 121598011. The next prime is 121598051. The reversal of 121598039 is 930895121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121598039 - 2¹⁶ = 121532503 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121597993 and 121598011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121598069) 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, 60799019 + 60799020.

It is an arithmetic number, because the mean of its divisors is an integer number (60799020).

Almost surely, 2^121598039 is an apocalyptic number.

121598039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121598039 is an equidigital number, since it uses as much as digits as its factorization.

121598039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 121598039 is about 11027.1500851308. The cubic root of 121598039 is about 495.4222686571.

The spelling of 121598039 in words is "one hundred twenty-one million, five hundred ninety-eight thousand, thirty-nine".