16539842 has 16 divisors (see below), whose sum is σ = 28490400. Its totient is φ = 7122240.

The previous prime is 16539839. The next prime is 16539857. The reversal of 16539842 is 24893561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 16539796 and 16539805.

It is an unprimeable number.

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, 19367 + ... + 20202.

It is an arithmetic number, because the mean of its divisors is an integer number (1780650).

Almost surely, 2^16539842 is an apocalyptic number.

16539842 is a deficient number, since it is larger than the sum of its proper divisors (11950558).

16539842 is a wasteful number, since it uses less digits than its factorization.

16539842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39601.

The product of its digits is 51840, while the sum is 38.

The square root of 16539842 is about 4066.9204565617. The cubic root of 16539842 is about 254.7869141325.

The spelling of 16539842 in words is "sixteen million, five hundred thirty-nine thousand, eight hundred forty-two".