121743329 has 2 divisors, whose sum is σ = 121743330. Its totient is φ = 121743328.

The previous prime is 121743287. The next prime is 121743379. The reversal of 121743329 is 923347121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108638929 + 13104400 = 10423^2 + 3620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121743329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121743295 and 121743304.

It is not a weakly prime, because it can be changed into another prime (121743379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60871664 + 60871665.

It is an arithmetic number, because the mean of its divisors is an integer number (60871665).

Almost surely, 2^121743329 is an apocalyptic number.

It is an amenable number.

121743329 is a deficient number, since it is larger than the sum of its proper divisors (1).

121743329 is an equidigital number, since it uses as much as digits as its factorization.

121743329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 121743329 is about 11033.7359493510. The cubic root of 121743329 is about 495.6195066304.

The spelling of 121743329 in words is "one hundred twenty-one million, seven hundred forty-three thousand, three hundred twenty-nine".