6539442 has 96 divisors (see below), whose sum is σ = 17236800. Its totient is φ = 1636992.

The previous prime is 6539437. The next prime is 6539443. The reversal of 6539442 is 2449356.

Its product of digits (25920) is a multiple of the sum of its prime factors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539443) 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 47 ways as a sum of consecutive naturals, for example, 110809 + ... + 110867.

It is an arithmetic number, because the mean of its divisors is an integer number (179550).

Almost surely, 2^6539442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6539442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8618400).

6539442 is an abundant number, since it is smaller than the sum of its proper divisors (10697358).

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

6539442 is a wasteful number, since it uses less digits than its factorization.

6539442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 113 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 6539442 is about 2557.2332705485. The cubic root of 6539442 is about 187.0022781806.

The spelling of 6539442 in words is "six million, five hundred thirty-nine thousand, four hundred forty-two".