1542543 has 8 divisors (see below), whose sum is σ = 2107056. Its totient is φ = 1003200.

The previous prime is 1542533. The next prime is 1542551. The reversal of 1542543 is 3452451.

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

It is not a de Polignac number, because 1542543 - 2⁵ = 1542511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6148 + ... + 6393.

It is an arithmetic number, because the mean of its divisors is an integer number (263382).

2^1542543 is an apocalyptic number.

1542543 is a deficient number, since it is larger than the sum of its proper divisors (564513).

1542543 is a wasteful number, since it uses less digits than its factorization.

1542543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12585.

The product of its digits is 2400, while the sum is 24.

The square root of 1542543 is about 1241.9915458649. The cubic root of 1542543 is about 115.5435640841.

Adding to 1542543 its reverse (3452451), we get a palindrome (4994994).

The spelling of 1542543 in words is "one million, five hundred forty-two thousand, five hundred forty-three".