2563842 has 8 divisors (see below), whose sum is σ = 5127696. Its totient is φ = 854612.

The previous prime is 2563837. The next prime is 2563849. The reversal of 2563842 is 2483652.

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

2563842 is an admirable number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2563849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213648 + ... + 213659.

It is an arithmetic number, because the mean of its divisors is an integer number (640962).

2^2563842 is an apocalyptic number.

2563842 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.

2563842 is a wasteful number, since it uses less digits than its factorization.

2563842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427312.

The product of its digits is 11520, while the sum is 30.

The square root of 2563842 is about 1601.2001748688. The cubic root of 2563842 is about 136.8664761899.

The spelling of 2563842 in words is "two million, five hundred sixty-three thousand, eight hundred forty-two".