2012705405 has 8 divisors (see below), whose sum is σ = 2432623200. Its totient is φ = 1598579856.

The previous prime is 2012705381. The next prime is 2012705407. The reversal of 2012705405 is 5045072102.

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 2012705405 - 2⁶ = 2012705341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012705407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447295 + ... + 1448684.

It is an arithmetic number, because the mean of its divisors is an integer number (304077900).

Almost surely, 2^2012705405 is an apocalyptic number.

It is an amenable number.

2012705405 is a deficient number, since it is larger than the sum of its proper divisors (419917795).

2012705405 is a wasteful number, since it uses less digits than its factorization.

2012705405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896123.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 2012705405 is about 44863.1854085284. The cubic root of 2012705405 is about 1262.5833880156.

Adding to 2012705405 its reverse (5045072102), we get a palindrome (7057777507).

The spelling of 2012705405 in words is "two billion, twelve million, seven hundred five thousand, four hundred five".