2942881 has 2 divisors, whose sum is σ = 2942882. Its totient is φ = 2942880.

The previous prime is 2942843. The next prime is 2942909. The reversal of 2942881 is 1882492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2692881 + 250000 = 1641^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942881 - 2²¹ = 845729 is a prime.

It is a super-2 number, since 2×2942881² = 17321097160322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2942281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471440 + 1471441.

It is an arithmetic number, because the mean of its divisors is an integer number (1471441).

2^2942881 is an apocalyptic number.

It is an amenable number.

2942881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942881 is an equidigital number, since it uses as much as digits as its factorization.

2942881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 2942881 is about 1715.4827308953. The cubic root of 2942881 is about 143.3037538865.

The spelling of 2942881 in words is "two million, nine hundred forty-two thousand, eight hundred eighty-one".