6542431 has 6 divisors (see below), whose sum is σ = 7610640. Its totient is φ = 5607756.

The previous prime is 6542423. The next prime is 6542443. The reversal of 6542431 is 1342456.

It is not a de Polignac number, because 6542431 - 2³ = 6542423 is a prime.

It is a super-2 number, since 2×6542431² = 85606806779522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6542396 and 6542405.

It is a congruent number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66711 + ... + 66808.

It is an arithmetic number, because the mean of its divisors is an integer number (1268440).

Almost surely, 2^6542431 is an apocalyptic number.

6542431 is a deficient number, since it is larger than the sum of its proper divisors (1068209).

6542431 is a wasteful number, since it uses less digits than its factorization.

6542431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133533 (or 133526 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 6542431 is about 2557.8176244604. The cubic root of 6542431 is about 187.0307650490.

Adding to 6542431 its sum of digits (25), we get a palindrome (6542456).

Adding to 6542431 its reverse (1342456), we get a palindrome (7884887).

The spelling of 6542431 in words is "six million, five hundred forty-two thousand, four hundred thirty-one".