6542403 has 24 divisors (see below), whose sum is σ = 10533888. Its totient is φ = 3537648.

The previous prime is 6542401. The next prime is 6542413. The reversal of 6542403 is 3042456.

It is not a de Polignac number, because 6542403 - 2¹ = 6542401 is a prime.

It is a super-5 number, since 5×6542403⁵ (a number of 35 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (6542401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7150 + ... + 8012.

It is an arithmetic number, because the mean of its divisors is an integer number (438912).

Almost surely, 2^6542403 is an apocalyptic number.

6542403 is a deficient number, since it is larger than the sum of its proper divisors (3991485).

6542403 is a wasteful number, since it uses less digits than its factorization.

6542403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 6542403 is about 2557.8121510385. The cubic root of 6542403 is about 187.0304982333.

Adding to 6542403 its reverse (3042456), we get a palindrome (9584859).

The spelling of 6542403 in words is "six million, five hundred forty-two thousand, four hundred three".