2124289 has 2 divisors, whose sum is σ = 2124290. Its totient is φ = 2124288.

The previous prime is 2124277. The next prime is 2124299. The reversal of 2124289 is 9824212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1912689 + 211600 = 1383^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124289 - 2⁹ = 2123777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2124229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062144 + 1062145.

It is an arithmetic number, because the mean of its divisors is an integer number (1062145).

2^2124289 is an apocalyptic number.

It is an amenable number.

2124289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124289 is an equidigital number, since it uses as much as digits as its factorization.

2124289 is an evil number, because the sum of its binary digits is even.

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

The square root of 2124289 is about 1457.4940823207. The cubic root of 2124289 is about 128.5497392573.

It can be divided in two parts, 21 and 24289, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 2124289 in words is "two million, one hundred twenty-four thousand, two hundred eighty-nine".