16142009 has 16 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 14064960.

The previous prime is 16141997. The next prime is 16142011. The reversal of 16142009 is 90024161.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16142009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16142029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17264 + ... + 18174.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^16142009 is an apocalyptic number.

It is an amenable number.

16142009 is a deficient number, since it is larger than the sum of its proper divisors (2243911).

16142009 is a wasteful number, since it uses less digits than its factorization.

16142009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 16142009 is about 4017.7119110260. The cubic root of 16142009 is about 252.7275157465.

The spelling of 16142009 in words is "sixteen million, one hundred forty-two thousand, nine".