2124839 has 2 divisors, whose sum is σ = 2124840. Its totient is φ = 2124838.

The previous prime is 2124821. The next prime is 2124841. The reversal of 2124839 is 9384212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2124839 - 2¹⁶ = 2059303 is a prime.

Together with 2124841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2124869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062419 + 1062420.

It is an arithmetic number, because the mean of its divisors is an integer number (1062420).

2^2124839 is an apocalyptic number.

2124839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124839 is an equidigital number, since it uses as much as digits as its factorization.

2124839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 2124839 is about 1457.6827501209. The cubic root of 2124839 is about 128.5608325777.

The spelling of 2124839 in words is "two million, one hundred twenty-four thousand, eight hundred thirty-nine".