242134042387 has 2 divisors, whose sum is σ = 242134042388. Its totient is φ = 242134042386.

The previous prime is 242134042369. The next prime is 242134042427. The reversal of 242134042387 is 783240431242.

It is a happy number.

It is an a-pointer prime, because the next prime (242134042427) can be obtained adding 242134042387 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242134042387 - 2²³ = 242125653779 is a prime.

It is not a weakly prime, because it can be changed into another prime (242134042307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121067021193 + 121067021194.

It is an arithmetic number, because the mean of its divisors is an integer number (121067021194).

Almost surely, 2^242134042387 is an apocalyptic number.

242134042387 is a deficient number, since it is larger than the sum of its proper divisors (1).

242134042387 is an equidigital number, since it uses as much as digits as its factorization.

242134042387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 40.

The spelling of 242134042387 in words is "two hundred forty-two billion, one hundred thirty-four million, forty-two thousand, three hundred eighty-seven".