2558842 has 32 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 1024320.

The previous prime is 2558837. The next prime is 2558849. The reversal of 2558842 is 2488552.

It is a junction number, because it is equal to n+sod(n) for n = 2558798 and 2558807.

It is not an unprimeable number, because it can be changed into a prime (2558849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6384 + ... + 6772.

It is an arithmetic number, because the mean of its divisors is an integer number (147420).

2^2558842 is an apocalyptic number.

2558842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2558842 is the 1012-nd heptagonal number.

2558842 is a deficient number, since it is larger than the sum of its proper divisors (2158598).

2558842 is a wasteful number, since it uses less digits than its factorization.

2558842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

The product of its digits is 25600, while the sum is 34.

The square root of 2558842 is about 1599.6380840678. The cubic root of 2558842 is about 136.7774460384. Note that the first 3 decimals are identical.

The spelling of 2558842 in words is "two million, five hundred fifty-eight thousand, eight hundred forty-two".