2579842 has 4 divisors (see below), whose sum is σ = 3869766. Its totient is φ = 1289920.

The previous prime is 2579827. The next prime is 2579891. The reversal of 2579842 is 2489752.

2579842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2563201 + 16641 = 1601^2 + 129^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644959 + ... + 644962.

2^2579842 is an apocalyptic number.

2579842 is a deficient number, since it is larger than the sum of its proper divisors (1289924).

2579842 is a wasteful number, since it uses less digits than its factorization.

2579842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289923.

The product of its digits is 40320, while the sum is 37.

The square root of 2579842 is about 1606.1886564162. The cubic root of 2579842 is about 137.1505971781.

The spelling of 2579842 in words is "two million, five hundred seventy-nine thousand, eight hundred forty-two".