242147273 has 2 divisors, whose sum is σ = 242147274. Its totient is φ = 242147272.

The previous prime is 242147261. The next prime is 242147287. The reversal of 242147273 is 372741242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240963529 + 1183744 = 15523^2 + 1088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242147273 is a prime.

It is not a weakly prime, because it can be changed into another prime (242147173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121073636 + 121073637.

It is an arithmetic number, because the mean of its divisors is an integer number (121073637).

Almost surely, 2^242147273 is an apocalyptic number.

It is an amenable number.

242147273 is a deficient number, since it is larger than the sum of its proper divisors (1).

242147273 is an equidigital number, since it uses as much as digits as its factorization.

242147273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 32.

The square root of 242147273 is about 15561.0819996554. The cubic root of 242147273 is about 623.2943557721.

It can be divided in two parts, 2421 and 47273, that added together give a palindrome (49694).

The spelling of 242147273 in words is "two hundred forty-two million, one hundred forty-seven thousand, two hundred seventy-three".