2305642 has 12 divisors (see below), whose sum is σ = 3674790. Its totient is φ = 1084736.

The previous prime is 2305637. The next prime is 2305643. The reversal of 2305642 is 2465032.

It is a happy number.

2305642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2277081 + 28561 = 1509^2 + 169^2 .

It is not an unprimeable number, because it can be changed into a prime (2305643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1417 + ... + 2572.

2^2305642 is an apocalyptic number.

2305642 is a deficient number, since it is larger than the sum of its proper divisors (1369148).

2305642 is a wasteful number, since it uses less digits than its factorization.

2305642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025 (or 4008 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2305642 is about 1518.4340617887. The cubic root of 2305642 is about 132.1084584573.

The spelling of 2305642 in words is "two million, three hundred five thousand, six hundred forty-two".