2543542 has 8 divisors (see below), whose sum is σ = 3843576. Its totient is φ = 1262352.

The previous prime is 2543537. The next prime is 2543551. The reversal of 2543542 is 2453452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4368 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (480447).

2^2543542 is an apocalyptic number.

2543542 is a deficient number, since it is larger than the sum of its proper divisors (1300034).

2543542 is a wasteful number, since it uses less digits than its factorization.

2543542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9422.

The product of its digits is 4800, while the sum is 25.

The square root of 2543542 is about 1594.8485821544. The cubic root of 2543542 is about 136.5042912595.

Adding to 2543542 its reverse (2453452), we get a palindrome (4996994).

It can be divided in two parts, 25 and 43542, that multiplied together give a triangular number (1088550 = T₁₄₇₅).

The spelling of 2543542 in words is "two million, five hundred forty-three thousand, five hundred forty-two".