2943121 has 2 divisors, whose sum is σ = 2943122. Its totient is φ = 2943120.

The previous prime is 2943113. The next prime is 2943133. The reversal of 2943121 is 1213492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2446096 + 497025 = 1564^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2943121 - 2³ = 2943113 is a prime.

It is a super-2 number, since 2×2943121² = 17323922441282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2943092 and 2943101.

It is not a weakly prime, because it can be changed into another prime (2943191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471560 + 1471561.

It is an arithmetic number, because the mean of its divisors is an integer number (1471561).

2^2943121 is an apocalyptic number.

It is an amenable number.

2943121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2943121 is an equidigital number, since it uses as much as digits as its factorization.

2943121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 2943121 is about 1715.5526806251. The cubic root of 2943121 is about 143.3076493851.

The spelling of 2943121 in words is "two million, nine hundred forty-three thousand, one hundred twenty-one".