2144905 has 8 divisors (see below), whose sum is σ = 2941632. Its totient is φ = 1470768.

The previous prime is 2144899. The next prime is 2144951. The reversal of 2144905 is 5094412.

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 2144905 - 2³ = 2144897 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2144905.

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, 30607 + ... + 30676.

It is an arithmetic number, because the mean of its divisors is an integer number (367704).

2^2144905 is an apocalyptic number.

It is an amenable number.

2144905 is a deficient number, since it is larger than the sum of its proper divisors (796727).

2144905 is an equidigital number, since it uses as much as digits as its factorization.

2144905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61295.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2144905 is about 1464.5494187633. The cubic root of 2144905 is about 128.9642550643.

The spelling of 2144905 in words is "two million, one hundred forty-four thousand, nine hundred five".