239907343121 has 2 divisors, whose sum is σ = 239907343122. Its totient is φ = 239907343120.

The previous prime is 239907343103. The next prime is 239907343157. The reversal of 239907343121 is 121343709932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180523014400 + 59384328721 = 424880^2 + 243689^2 .

It is a cyclic number.

It is not a de Polignac number, because 239907343121 - 2¹⁰ = 239907342097 is a prime.

It is not a weakly prime, because it can be changed into another prime (239907343171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119953671560 + 119953671561.

It is an arithmetic number, because the mean of its divisors is an integer number (119953671561).

Almost surely, 2^239907343121 is an apocalyptic number.

It is an amenable number.

239907343121 is a deficient number, since it is larger than the sum of its proper divisors (1).

239907343121 is an equidigital number, since it uses as much as digits as its factorization.

239907343121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 239907343121 in words is "two hundred thirty-nine billion, nine hundred seven million, three hundred forty-three thousand, one hundred twenty-one".