2109045 has 8 divisors (see below), whose sum is σ = 3374496. Its totient is φ = 1124816.

The previous prime is 2109013. The next prime is 2109049. The reversal of 2109045 is 5409012.

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 2109045 - 2⁵ = 2109013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70287 + ... + 70316.

It is an arithmetic number, because the mean of its divisors is an integer number (421812).

2^2109045 is an apocalyptic number.

It is an amenable number.

2109045 is a deficient number, since it is larger than the sum of its proper divisors (1265451).

2109045 is a wasteful number, since it uses less digits than its factorization.

2109045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140611.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2109045 is about 1452.2551428726. The cubic root of 2109045 is about 128.2415077460.

The spelling of 2109045 in words is "two million, one hundred nine thousand, forty-five".