2124905 has 8 divisors (see below), whose sum is σ = 2588352. Its totient is φ = 1674288.

The previous prime is 2124887. The next prime is 2124919. The reversal of 2124905 is 5094212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2124905 - 2⁶ = 2124841 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (323544).

2^2124905 is an apocalyptic number.

It is an amenable number.

2124905 is a deficient number, since it is larger than the sum of its proper divisors (463447).

2124905 is an equidigital number, since it uses as much as digits as its factorization.

2124905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2124905 is about 1457.7053886160. The cubic root of 2124905 is about 128.5621636475.

The spelling of 2124905 in words is "two million, one hundred twenty-four thousand, nine hundred five".