16142539 has 8 divisors (see below), whose sum is σ = 18507008. Its totient is φ = 13792680.

The previous prime is 16142521. The next prime is 16142543. The reversal of 16142539 is 93524161.

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

It is a cyclic number.

It is not a de Polignac number, because 16142539 - 2⁵ = 16142507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16142539.

It is not an unprimeable number, because it can be changed into a prime (16142519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167 + ... + 5800.

It is an arithmetic number, because the mean of its divisors is an integer number (2313376).

Almost surely, 2^16142539 is an apocalyptic number.

16142539 is a deficient number, since it is larger than the sum of its proper divisors (2364469).

16142539 is an equidigital number, since it uses as much as digits as its factorization.

16142539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7305.

The product of its digits is 6480, while the sum is 31.

The square root of 16142539 is about 4017.7778684243. Note that the first 3 decimals coincide. The cubic root of 16142539 is about 252.7302816995.

The spelling of 16142539 in words is "sixteen million, one hundred forty-two thousand, five hundred thirty-nine".