2544542 has 64 divisors (see below), whose sum is σ = 5419008. Its totient is φ = 864000.

The previous prime is 2544539. The next prime is 2544571. The reversal of 2544542 is 2454452.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 62042 + ... + 62082.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

2^2544542 is an apocalyptic number.

2544542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2544542 is an abundant number, since it is smaller than the sum of its proper divisors (2874466).

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

2544542 is a wasteful number, since it uses less digits than its factorization.

2544542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105.

The product of its digits is 6400, while the sum is 26.

The square root of 2544542 is about 1595.1620607324. The cubic root of 2544542 is about 136.5221779186.

Adding to 2544542 its reverse (2454452), we get a palindrome (4998994).

The spelling of 2544542 in words is "two million, five hundred forty-four thousand, five hundred forty-two".