2072405 has 8 divisors (see below), whose sum is σ = 2513112. Its totient is φ = 1640448.

The previous prime is 2072393. The next prime is 2072423. The reversal of 2072405 is 5042702.

It can be written as a sum of positive squares in 4 ways, for example, as 64516 + 2007889 = 254^2 + 1417^2 .

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 2072405 - 2¹⁶ = 2006869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1652 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (314139).

2^2072405 is an apocalyptic number.

It is an amenable number.

2072405 is a deficient number, since it is larger than the sum of its proper divisors (440707).

2072405 is an equidigital number, since it uses as much as digits as its factorization.

2072405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2072405 is about 1439.5850096469. The cubic root of 2072405 is about 127.4945275109.

It can be divided in two parts, 2072 and 405, that multiplied together give a triangular number (839160 = T₁₂₉₅).

The spelling of 2072405 in words is "two million, seventy-two thousand, four hundred five".