121260239 has 2 divisors, whose sum is σ = 121260240. Its totient is φ = 121260238.

The previous prime is 121260233. The next prime is 121260259. The reversal of 121260239 is 932062121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121260239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121260233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60630119 + 60630120.

It is an arithmetic number, because the mean of its divisors is an integer number (60630120).

Almost surely, 2^121260239 is an apocalyptic number.

121260239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121260239 is an equidigital number, since it uses as much as digits as its factorization.

121260239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 121260239 is about 11011.8226919979. The cubic root of 121260239 is about 494.9630812856.

The spelling of 121260239 in words is "one hundred twenty-one million, two hundred sixty thousand, two hundred thirty-nine".