6409542 has 8 divisors (see below), whose sum is σ = 12819096. Its totient is φ = 2136512.

The previous prime is 6409523. The next prime is 6409549. The reversal of 6409542 is 2459046.

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

6409542 is an admirable number.

It is a d-powerful number, because it can be written as 6⁸ + 4⁵ + 0 + 9⁶ + 5⁵ + 4¹¹ + 2⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6409549) 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 3 ways as a sum of consecutive naturals, for example, 534123 + ... + 534134.

It is an arithmetic number, because the mean of its divisors is an integer number (1602387).

Almost surely, 2^6409542 is an apocalyptic number.

6409542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6409542 is a wasteful number, since it uses less digits than its factorization.

6409542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068262.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 6409542 is about 2531.7073290568. The cubic root of 6409542 is about 185.7557784438.

The spelling of 6409542 in words is "six million, four hundred nine thousand, five hundred forty-two".