242111404109 has 2 divisors, whose sum is σ = 242111404110. Its totient is φ = 242111404108.

The previous prime is 242111404097. The next prime is 242111404111. The reversal of 242111404109 is 901404111242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242085648484 + 25755625 = 492022^2 + 5075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242111404109 is a prime.

Together with 242111404111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242111404189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121055702054 + 121055702055.

It is an arithmetic number, because the mean of its divisors is an integer number (121055702055).

Almost surely, 2^242111404109 is an apocalyptic number.

It is an amenable number.

242111404109 is a deficient number, since it is larger than the sum of its proper divisors (1).

242111404109 is an equidigital number, since it uses as much as digits as its factorization.

242111404109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 242111404109 in words is "two hundred forty-two billion, one hundred eleven million, four hundred four thousand, one hundred nine".