16142881 has 4 divisors (see below), whose sum is σ = 16299712. Its totient is φ = 15986052.

The previous prime is 16142869. The next prime is 16142887. The reversal of 16142881 is 18824161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16142881 - 2¹¹ = 16140833 is a prime.

It is a super-2 number, since 2×16142881² = 521185213960322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16142887) 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 3 ways as a sum of consecutive naturals, for example, 78261 + ... + 78466.

It is an arithmetic number, because the mean of its divisors is an integer number (4074928).

Almost surely, 2^16142881 is an apocalyptic number.

It is an amenable number.

16142881 is a deficient number, since it is larger than the sum of its proper divisors (156831).

16142881 is a wasteful number, since it uses less digits than its factorization.

16142881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156830.

The product of its digits is 3072, while the sum is 31.

The square root of 16142881 is about 4017.8204290386. The cubic root of 16142881 is about 252.7320664899.

The spelling of 16142881 in words is "sixteen million, one hundred forty-two thousand, eight hundred eighty-one".