2124389 has 4 divisors (see below), whose sum is σ = 2151360. Its totient is φ = 2097420.

The previous prime is 2124377. The next prime is 2124401. The reversal of 2124389 is 9834212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2124377) and next prime (2124401).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2124389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13367 + ... + 13524.

It is an arithmetic number, because the mean of its divisors is an integer number (537840).

2^2124389 is an apocalyptic number.

It is an amenable number.

2124389 is a deficient number, since it is larger than the sum of its proper divisors (26971).

2124389 is an equidigital number, since it uses as much as digits as its factorization.

2124389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26970.

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

The square root of 2124389 is about 1457.5283873736. The cubic root of 2124389 is about 128.5517563670.

The spelling of 2124389 in words is "two million, one hundred twenty-four thousand, three hundred eighty-nine".