16142985 has 12 divisors (see below), whose sum is σ = 27981252. Its totient is φ = 8609568.

The previous prime is 16142963. The next prime is 16142993. The reversal of 16142985 is 58924161.

16142985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8982009 + 7160976 = 2997^2 + 2676^2 .

It is not a de Polignac number, because 16142985 - 2⁵ = 16142953 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179322 + ... + 179411.

It is an arithmetic number, because the mean of its divisors is an integer number (2331771).

Almost surely, 2^16142985 is an apocalyptic number.

16142985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16142985 is a deficient number, since it is larger than the sum of its proper divisors (11838267).

16142985 is a wasteful number, since it uses less digits than its factorization.

16142985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358744 (or 358741 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 16142985 is about 4017.8333713582. The cubic root of 16142985 is about 252.7326092282.

The spelling of 16142985 in words is "sixteen million, one hundred forty-two thousand, nine hundred eighty-five".