2581342 has 8 divisors (see below), whose sum is σ = 3976776. Its totient is φ = 1255752.

The previous prime is 2581289. The next prime is 2581349. The reversal of 2581342 is 2431852.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17368 + ... + 17515.

It is an arithmetic number, because the mean of its divisors is an integer number (497097).

2^2581342 is an apocalyptic number.

2581342 is a deficient number, since it is larger than the sum of its proper divisors (1395434).

2581342 is a wasteful number, since it uses less digits than its factorization.

2581342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34922.

The product of its digits is 1920, while the sum is 25.

The square root of 2581342 is about 1606.6555324649. The cubic root of 2581342 is about 137.1771732290.

It can be divided in two parts, 258 and 1342, that added together give a square (1600 = 40²).

The spelling of 2581342 in words is "two million, five hundred eighty-one thousand, three hundred forty-two".