2942281 has 2 divisors, whose sum is σ = 2942282. Its totient is φ = 2942280.

The previous prime is 2942273. The next prime is 2942287. The reversal of 2942281 is 1822492.

2942281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 968256 = 1405^2 + 984^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942281 - 2³ = 2942273 is a prime.

It is a super-2 number, since 2×2942281² = 17314034965922, which contains 22 as substring.

2942281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2942287) 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, 1471140 + 1471141.

It is an arithmetic number, because the mean of its divisors is an integer number (1471141).

2^2942281 is an apocalyptic number.

It is an amenable number.

2942281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942281 is an equidigital number, since it uses as much as digits as its factorization.

2942281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 2942281 is about 1715.3078440910. The cubic root of 2942281 is about 143.2940142135.

It can be divided in two parts, 2942 and 281, that added together give a palindrome (3223).

The spelling of 2942281 in words is "two million, nine hundred forty-two thousand, two hundred eighty-one".