2542439 has 4 divisors (see below), whose sum is σ = 2578320. Its totient is φ = 2506560.

The previous prime is 2542429. The next prime is 2542453. The reversal of 2542439 is 9342452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2542439 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 5⁹ + 4⁵ + 2¹⁹ + 4⁶ + 3¹⁰ + 9³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542429) 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 3 ways as a sum of consecutive naturals, for example, 17834 + ... + 17975.

It is an arithmetic number, because the mean of its divisors is an integer number (644580).

2^2542439 is an apocalyptic number.

2542439 is a deficient number, since it is larger than the sum of its proper divisors (35881).

2542439 is an equidigital number, since it uses as much as digits as its factorization.

2542439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35880.

The product of its digits is 8640, while the sum is 29.

The square root of 2542439 is about 1594.5027438045. The cubic root of 2542439 is about 136.4845568363.

The spelling of 2542439 in words is "two million, five hundred forty-two thousand, four hundred thirty-nine".