5642543 has 4 divisors (see below), whose sum is σ = 5780208. Its totient is φ = 5504880.

The previous prime is 5642531. The next prime is 5642591. The reversal of 5642543 is 3452465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3452465 = 5 ⋅690493.

It is a cyclic number.

It is not a de Polignac number, because 5642543 - 2⁶ = 5642479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68771 + ... + 68852.

It is an arithmetic number, because the mean of its divisors is an integer number (1445052).

Almost surely, 2^5642543 is an apocalyptic number.

5642543 is a deficient number, since it is larger than the sum of its proper divisors (137665).

5642543 is a wasteful number, since it uses less digits than its factorization.

5642543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137664.

The product of its digits is 14400, while the sum is 29.

The square root of 5642543 is about 2375.4037551541. The cubic root of 5642543 is about 178.0293580327.

The spelling of 5642543 in words is "five million, six hundred forty-two thousand, five hundred forty-three".