2581242 has 16 divisors (see below), whose sum is σ = 5240352. Its totient is φ = 847440.

The previous prime is 2581223. The next prime is 2581253. The reversal of 2581242 is 2421852.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2809 + ... + 3612.

It is an arithmetic number, because the mean of its divisors is an integer number (327522).

2^2581242 is an apocalyptic number.

2581242 is an abundant number, since it is smaller than the sum of its proper divisors (2659110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2581242 is a wasteful number, since it uses less digits than its factorization.

2581242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493.

The product of its digits is 1280, while the sum is 24.

The square root of 2581242 is about 1606.6244116159. The cubic root of 2581242 is about 137.1754018126.

The spelling of 2581242 in words is "two million, five hundred eighty-one thousand, two hundred forty-two".