2107145 has 16 divisors (see below), whose sum is σ = 2685312. Its totient is φ = 1584000.

The previous prime is 2107141. The next prime is 2107153. The reversal of 2107145 is 5417012.

2107145 = 40² + 41² + ... + 185².

It is not a de Polignac number, because 2107145 - 2² = 2107141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2107141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8270 + ... + 8520.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

2^2107145 is an apocalyptic number.

It is an amenable number.

2107145 is a deficient number, since it is larger than the sum of its proper divisors (578167).

2107145 is a wasteful number, since it uses less digits than its factorization.

2107145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 2107145 is about 1451.6008404517. The cubic root of 2107145 is about 128.2029860343.

The spelling of 2107145 in words is "two million, one hundred seven thousand, one hundred forty-five".