2559942 has 48 divisors (see below), whose sum is σ = 6918912. Its totient is φ = 664560.

The previous prime is 2559937. The next prime is 2559959. The reversal of 2559942 is 2499552.

It is a happy number.

2559942 is a `hidden beast` number, since 25 + 599 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2559897 and 2559906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (144144).

2^2559942 is an apocalyptic number.

2559942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2559942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3459456).

2559942 is an abundant number, since it is smaller than the sum of its proper divisors (4358970).

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

2559942 is a wasteful number, since it uses less digits than its factorization.

2559942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1870 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 2559942 is about 1599.9818748973. The cubic root of 2559942 is about 136.7970426159.

The spelling of 2559942 in words is "two million, five hundred fifty-nine thousand, nine hundred forty-two".