2545442 has 8 divisors (see below), whose sum is σ = 3834732. Its totient is φ = 1267200.

The previous prime is 2545429. The next prime is 2545447. The reversal of 2545442 is 2445452.

2545442 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 2 ways, for example, as 2531281 + 14161 = 1591^2 + 119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹¹ + 5³ + 4³ + 5⁹ + 4⁴ + 4⁸ + 2¹⁹ .

It is not an unprimeable number, because it can be changed into a prime (2545447) 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 3 ways as a sum of consecutive naturals, for example, 2159 + ... + 3122.

2^2545442 is an apocalyptic number.

2545442 is a deficient number, since it is larger than the sum of its proper divisors (1289290).

2545442 is a wasteful number, since it uses less digits than its factorization.

2545442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524.

The product of its digits is 6400, while the sum is 26.

The square root of 2545442 is about 1595.4441387902. Note that the first 3 decimals coincide. The cubic root of 2545442 is about 136.5382719055.

The spelling of 2545442 in words is "two million, five hundred forty-five thousand, four hundred forty-two".