242387447 has 2 divisors, whose sum is σ = 242387448. Its totient is φ = 242387446.

The previous prime is 242387443. The next prime is 242387461. The reversal of 242387447 is 744783242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242387447 - 2² = 242387443 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242387443) 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, 121193723 + 121193724.

It is an arithmetic number, because the mean of its divisors is an integer number (121193724).

Almost surely, 2^242387447 is an apocalyptic number.

242387447 is a deficient number, since it is larger than the sum of its proper divisors (1).

242387447 is an equidigital number, since it uses as much as digits as its factorization.

242387447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 41.

The square root of 242387447 is about 15568.7972239348. The cubic root of 242387447 is about 623.5003593761.

The spelling of 242387447 in words is "two hundred forty-two million, three hundred eighty-seven thousand, four hundred forty-seven".