2556042 has 8 divisors (see below), whose sum is σ = 5112096. Its totient is φ = 852012.

The previous prime is 2556041. The next prime is 2556061. The reversal of 2556042 is 2406552.

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

2556042 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2⁵ + 5⁷ + 5⁹ + 6³ + 0 + 4⁴ + 2¹⁹ .

It is not an unprimeable number, because it can be changed into a prime (2556041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212998 + ... + 213009.

It is an arithmetic number, because the mean of its divisors is an integer number (639012).

2^2556042 is an apocalyptic number.

2556042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2556042 is a wasteful number, since it uses less digits than its factorization.

2556042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426012.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2556042 is about 1598.7626465489. The cubic root of 2556042 is about 136.7275384859.

The spelling of 2556042 in words is "two million, five hundred fifty-six thousand, forty-two".