242042211251 has 2 divisors, whose sum is σ = 242042211252. Its totient is φ = 242042211250.

The previous prime is 242042211197. The next prime is 242042211331. The reversal of 242042211251 is 152112240242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242042211251 is a prime.

It is a super-3 number, since 3×242042211251³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242042211251.

It is not a weakly prime, because it can be changed into another prime (242042211451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121021105625 + 121021105626.

It is an arithmetic number, because the mean of its divisors is an integer number (121021105626).

Almost surely, 2^242042211251 is an apocalyptic number.

242042211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

242042211251 is an equidigital number, since it uses as much as digits as its factorization.

242042211251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 242042211251 its reverse (152112240242), we get a palindrome (394154451493).

The spelling of 242042211251 in words is "two hundred forty-two billion, forty-two million, two hundred eleven thousand, two hundred fifty-one".