6542420 has 24 divisors (see below), whose sum is σ = 13791624. Its totient is φ = 2606976.

The previous prime is 6542413. The next prime is 6542423. The reversal of 6542420 is 242456.

It can be written as a sum of positive squares in 4 ways, for example, as 1684804 + 4857616 = 1298^2 + 2204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542423) 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 7 ways as a sum of consecutive naturals, for example, 7022 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (574651).

Almost surely, 2^6542420 is an apocalyptic number.

It is an amenable number.

6542420 is an abundant number, since it is smaller than the sum of its proper divisors (7249204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6542420 is a wasteful number, since it uses less digits than its factorization.

6542420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 6542420 is about 2557.8154741889. The cubic root of 6542420 is about 187.0306602286.

Adding to 6542420 its reverse (242456), we get a palindrome (6784876).

The spelling of 6542420 in words is "six million, five hundred forty-two thousand, four hundred twenty".