16142724 has 72 divisors (see below), whose sum is σ = 46551960. Its totient is φ = 4672512.

The previous prime is 16142717. The next prime is 16142743. The reversal of 16142724 is 42724161.

16142724 is a `hidden beast` number, since 1 + 614 + 27 + 24 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6594624 + 9548100 = 2568^2 + 3090^2 .

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 23 ways as a sum of consecutive naturals, for example, 6942 + ... + 8970.

It is an arithmetic number, because the mean of its divisors is an integer number (646555).

Almost surely, 2^16142724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16142724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23275980).

16142724 is an abundant number, since it is smaller than the sum of its proper divisors (30409236).

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

16142724 is a wasteful number, since it uses less digits than its factorization.

16142724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069 (or 2064 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 16142724 is about 4017.8008910348. The cubic root of 16142724 is about 252.7312471595.

Adding to 16142724 its reverse (42724161), we get a palindrome (58866885).

The spelling of 16142724 in words is "sixteen million, one hundred forty-two thousand, seven hundred twenty-four".