242003647 has 2 divisors, whose sum is σ = 242003648. Its totient is φ = 242003646.

The previous prime is 242003633. The next prime is 242003669. The reversal of 242003647 is 746300242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242003647 - 2²⁷ = 107785919 is a prime.

It is a super-2 number, since 2×242003647² = 117131530322601218, 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 (242003617) 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, 121001823 + 121001824.

It is an arithmetic number, because the mean of its divisors is an integer number (121001824).

Almost surely, 2^242003647 is an apocalyptic number.

242003647 is a deficient number, since it is larger than the sum of its proper divisors (1).

242003647 is an equidigital number, since it uses as much as digits as its factorization.

242003647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 242003647 is about 15556.4664046820. The cubic root of 242003647 is about 623.1710988532.

Adding to 242003647 its reverse (746300242), we get a palindrome (988303889).

The spelling of 242003647 in words is "two hundred forty-two million, three thousand, six hundred forty-seven".