2072145 has 8 divisors (see below), whose sum is σ = 3315456. Its totient is φ = 1105136.

The previous prime is 2072131. The next prime is 2072153. The reversal of 2072145 is 5412702.

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 2072145 - 2⁴ = 2072129 is a prime.

It is a Curzon number.

2072145 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69057 + ... + 69086.

It is an arithmetic number, because the mean of its divisors is an integer number (414432).

2^2072145 is an apocalyptic number.

It is an amenable number.

2072145 is a deficient number, since it is larger than the sum of its proper divisors (1243311).

2072145 is a wasteful number, since it uses less digits than its factorization.

2072145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138151.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2072145 is about 1439.4947030121. The cubic root of 2072145 is about 127.4891955473.

Adding to 2072145 its reverse (5412702), we get a palindrome (7484847).

The spelling of 2072145 in words is "two million, seventy-two thousand, one hundred forty-five".