2505442 has 4 divisors (see below), whose sum is σ = 3758166. Its totient is φ = 1252720.

The previous prime is 2505421. The next prime is 2505457. The reversal of 2505442 is 2445052.

2505442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 43681 = 1569^2 + 209^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 2505442 parts by 2238 straight cuts.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 626359 + ... + 626362.

2^2505442 is an apocalyptic number.

2505442 is a deficient number, since it is larger than the sum of its proper divisors (1252724).

2505442 is a wasteful number, since it uses less digits than its factorization.

2505442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252723.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2505442 is about 1582.8588060847. The cubic root of 2505442 is about 135.8192885308.

The spelling of 2505442 in words is "two million, five hundred five thousand, four hundred forty-two".