6539942 has 8 divisors (see below), whose sum is σ = 9822600. Its totient is φ = 3265744.

The previous prime is 6539927. The next prime is 6539957. The reversal of 6539942 is 2499356.

It is an interprime number because it is at equal distance from previous prime (6539927) and next prime (6539957).

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

It is a junction number, because it is equal to n+sod(n) for n = 6539896 and 6539905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 3642.

It is an arithmetic number, because the mean of its divisors is an integer number (1227825).

Almost surely, 2^6539942 is an apocalyptic number.

6539942 is a deficient number, since it is larger than the sum of its proper divisors (3282658).

6539942 is a wasteful number, since it uses less digits than its factorization.

6539942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230.

The product of its digits is 58320, while the sum is 38.

The square root of 6539942 is about 2557.3310305864. The cubic root of 6539942 is about 187.0070440692.

The spelling of 6539942 in words is "six million, five hundred thirty-nine thousand, nine hundred forty-two".