242354156647 has 2 divisors, whose sum is σ = 242354156648. Its totient is φ = 242354156646.

The previous prime is 242354156641. The next prime is 242354156657. The reversal of 242354156647 is 746651453242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242354156647 - 2¹⁹ = 242353632359 is a prime.

It is a super-2 number, since 2×242354156647² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242354156647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242354156641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121177078323 + 121177078324.

It is an arithmetic number, because the mean of its divisors is an integer number (121177078324).

Almost surely, 2^242354156647 is an apocalyptic number.

242354156647 is a deficient number, since it is larger than the sum of its proper divisors (1).

242354156647 is an equidigital number, since it uses as much as digits as its factorization.

242354156647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 49.

The spelling of 242354156647 in words is "two hundred forty-two billion, three hundred fifty-four million, one hundred fifty-six thousand, six hundred forty-seven".