2124791 has 2 divisors, whose sum is σ = 2124792. Its totient is φ = 2124790.

The previous prime is 2124769. The next prime is 2124797. The reversal of 2124791 is 1974212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2124791 - 2¹⁰ = 2123767 is a prime.

It is a Chen prime.

It is equal to p₁₅₇₅₀₈ and since 2124791 and 157508 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2124791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2124797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062395 + 1062396.

It is an arithmetic number, because the mean of its divisors is an integer number (1062396).

2^2124791 is an apocalyptic number.

2124791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124791 is an equidigital number, since it uses as much as digits as its factorization.

2124791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 2124791 is about 1457.6662855400. Note that the first 3 decimals coincide. The cubic root of 2124791 is about 128.5598645096.

The spelling of 2124791 in words is "two million, one hundred twenty-four thousand, seven hundred ninety-one".