2942561 has 2 divisors, whose sum is σ = 2942562. Its totient is φ = 2942560.

The previous prime is 2942539. The next prime is 2942609. The reversal of 2942561 is 1652492.

It is a happy number.

2942561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 430336 = 1585^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942561 - 2¹⁴ = 2926177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2942521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471280 + 1471281.

It is an arithmetic number, because the mean of its divisors is an integer number (1471281).

2^2942561 is an apocalyptic number.

It is an amenable number.

2942561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942561 is an equidigital number, since it uses as much as digits as its factorization.

2942561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 2942561 is about 1715.3894601518. The cubic root of 2942561 is about 143.2985595590.

The spelling of 2942561 in words is "two million, nine hundred forty-two thousand, five hundred sixty-one".