2420605 has 12 divisors (see below), whose sum is σ = 3193596. Its totient is φ = 1760000.

The previous prime is 2420569. The next prime is 2420609. The reversal of 2420605 is 5060242.

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 2013561 = 638^2 + 1419^2 .

It is not a de Polignac number, because 2420605 - 2¹¹ = 2418557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1396 + ... + 2605.

It is an arithmetic number, because the mean of its divisors is an integer number (266133).

2^2420605 is an apocalyptic number.

It is an amenable number.

2420605 is a deficient number, since it is larger than the sum of its proper divisors (772991).

2420605 is a wasteful number, since it uses less digits than its factorization.

2420605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028 (or 4017 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2420605 is about 1555.8293608234. The cubic root of 2420605 is about 134.2686560819.

Adding to 2420605 its reverse (5060242), we get a palindrome (7480847).

It can be divided in two parts, 2420 and 605, that multiplied together give a square (1464100 = 1210²).

The spelling of 2420605 in words is "two million, four hundred twenty thousand, six hundred five".