121594159 has 2 divisors, whose sum is σ = 121594160. Its totient is φ = 121594158.

The previous prime is 121594147. The next prime is 121594199. The reversal of 121594159 is 951495121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121594159 - 2⁵ = 121594127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121594199) 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, 60797079 + 60797080.

It is an arithmetic number, because the mean of its divisors is an integer number (60797080).

Almost surely, 2^121594159 is an apocalyptic number.

121594159 is a deficient number, since it is larger than the sum of its proper divisors (1).

121594159 is an equidigital number, since it uses as much as digits as its factorization.

121594159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The square root of 121594159 is about 11026.9741543181. The cubic root of 121594159 is about 495.4169992222.

The spelling of 121594159 in words is "one hundred twenty-one million, five hundred ninety-four thousand, one hundred fifty-nine".