2130605 has 16 divisors (see below), whose sum is σ = 2709504. Its totient is φ = 1605120.

The previous prime is 2130581. The next prime is 2130613. The reversal of 2130605 is 5060312.

It is not a de Polignac number, because 2130605 - 2¹⁴ = 2114221 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11060 + ... + 11250.

It is an arithmetic number, because the mean of its divisors is an integer number (169344).

2^2130605 is an apocalyptic number.

It is an amenable number.

2130605 is a deficient number, since it is larger than the sum of its proper divisors (578899).

2130605 is a wasteful number, since it uses less digits than its factorization.

2130605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2130605 is about 1459.6592068014. The cubic root of 2130605 is about 128.6770158511.

Adding to 2130605 its reverse (5060312), we get a palindrome (7190917).

The spelling of 2130605 in words is "two million, one hundred thirty thousand, six hundred five".