242104781 has 2 divisors, whose sum is σ = 242104782. Its totient is φ = 242104780.

The previous prime is 242104757. The next prime is 242104787. The reversal of 242104781 is 187401242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191822500 + 50282281 = 13850^2 + 7091^2 .

It is a cyclic number.

It is not a de Polignac number, because 242104781 - 2⁶ = 242104717 is a prime.

It is a super-2 number, since 2×242104781² = 117229449966115922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242104787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121052390 + 121052391.

It is an arithmetic number, because the mean of its divisors is an integer number (121052391).

Almost surely, 2^242104781 is an apocalyptic number.

It is an amenable number.

242104781 is a deficient number, since it is larger than the sum of its proper divisors (1).

242104781 is an equidigital number, since it uses as much as digits as its factorization.

242104781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 242104781 is about 15559.7166105299. The cubic root of 242104781 is about 623.2578950778.

The spelling of 242104781 in words is "two hundred forty-two million, one hundred four thousand, seven hundred eighty-one".