242798641 has 4 divisors (see below), whose sum is σ = 257080932. Its totient is φ = 228516352.

The previous prime is 242798639. The next prime is 242798651. The reversal of 242798641 is 146897242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220671025 + 22127616 = 14855^2 + 4704^2 .

It is a cyclic number.

It is not a de Polignac number, because 242798641 - 2¹ = 242798639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242798651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7141120 + ... + 7141153.

It is an arithmetic number, because the mean of its divisors is an integer number (64270233).

Almost surely, 2^242798641 is an apocalyptic number.

It is an amenable number.

242798641 is a deficient number, since it is larger than the sum of its proper divisors (14282291).

242798641 is a wasteful number, since it uses less digits than its factorization.

242798641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14282290.

The product of its digits is 193536, while the sum is 43.

The square root of 242798641 is about 15581.9973366703. The cubic root of 242798641 is about 623.8527356638.

The spelling of 242798641 in words is "two hundred forty-two million, seven hundred ninety-eight thousand, six hundred forty-one".