2542842 has 12 divisors (see below), whose sum is σ = 5509530. Its totient is φ = 847608.

The previous prime is 2542829. The next prime is 2542849. The reversal of 2542842 is 2482452.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 408321 = 1461^2 + 639^2 .

It is not an unprimeable number, because it can be changed into a prime (2542849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70617 + ... + 70652.

2^2542842 is an apocalyptic number.

2542842 is an abundant number, since it is smaller than the sum of its proper divisors (2966688).

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

2542842 is a wasteful number, since it uses less digits than its factorization.

2542842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141277 (or 141274 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 2542842 is about 1594.6291104831. The cubic root of 2542842 is about 136.4917678085.

The spelling of 2542842 in words is "two million, five hundred forty-two thousand, eight hundred forty-two".