242160641 has 2 divisors, whose sum is σ = 242160642. Its totient is φ = 242160640.

The previous prime is 242160619. The next prime is 242160647. The reversal of 242160641 is 146061242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234978241 + 7182400 = 15329^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 242160641 - 2⁶ = 242160577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 242160641.

It is not a weakly prime, because it can be changed into another prime (242160647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121080320 + 121080321.

It is an arithmetic number, because the mean of its divisors is an integer number (121080321).

Almost surely, 2^242160641 is an apocalyptic number.

It is an amenable number.

242160641 is a deficient number, since it is larger than the sum of its proper divisors (1).

242160641 is an equidigital number, since it uses as much as digits as its factorization.

242160641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 242160641 is about 15561.5115268408. The cubic root of 242160641 is about 623.3058254389.

The spelling of 242160641 in words is "two hundred forty-two million, one hundred sixty thousand, six hundred forty-one".