242066641 has 4 divisors (see below), whose sum is σ = 242149284. Its totient is φ = 241984000.

The previous prime is 242066633. The next prime is 242066677. The reversal of 242066641 is 146660242.

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 104121616 + 137945025 = 10204^2 + 11745^2 .

It is a cyclic number.

It is not a de Polignac number, because 242066641 - 2³ = 242066633 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242066611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36760 + ... + 42841.

It is an arithmetic number, because the mean of its divisors is an integer number (60537321).

Almost surely, 2^242066641 is an apocalyptic number.

It is an amenable number.

242066641 is a deficient number, since it is larger than the sum of its proper divisors (82643).

242066641 is an equidigital number, since it uses as much as digits as its factorization.

242066641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82642.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 242066641 is about 15558.4909615297. The cubic root of 242066641 is about 623.2251650281.

The spelling of 242066641 in words is "two hundred forty-two million, sixty-six thousand, six hundred forty-one".