242124001309 has 2 divisors, whose sum is σ = 242124001310. Its totient is φ = 242124001308.

The previous prime is 242124001307. The next prime is 242124001313. The reversal of 242124001309 is 903100421242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207275325625 + 34848675684 = 455275^2 + 186678^2 .

It is a cyclic number.

It is not a de Polignac number, because 242124001309 - 2¹ = 242124001307 is a prime.

Together with 242124001307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242124001307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121062000654 + 121062000655.

It is an arithmetic number, because the mean of its divisors is an integer number (121062000655).

Almost surely, 2^242124001309 is an apocalyptic number.

It is an amenable number.

242124001309 is a deficient number, since it is larger than the sum of its proper divisors (1).

242124001309 is an equidigital number, since it uses as much as digits as its factorization.

242124001309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 242124001309 in words is "two hundred forty-two billion, one hundred twenty-four million, one thousand, three hundred nine".