16140005 has 8 divisors (see below), whose sum is σ = 22134912. Its totient is φ = 11067408.

The previous prime is 16140001. The next prime is 16140017. The reversal of 16140005 is 50004161.

16140005 = 662² + 663² + ... + 696².

It is a happy number.

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 16140005 - 2² = 16140001 is a prime.

It is a super-2 number, since 2×16140005² = 520999522800050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230537 + ... + 230606.

It is an arithmetic number, because the mean of its divisors is an integer number (2766864).

Almost surely, 2^16140005 is an apocalyptic number.

It is an amenable number.

16140005 is a deficient number, since it is larger than the sum of its proper divisors (5994907).

16140005 is an equidigital number, since it uses as much as digits as its factorization.

16140005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461155.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 16140005 is about 4017.4625076035. The cubic root of 16140005 is about 252.7170567654.

Adding to 16140005 its reverse (50004161), we get a palindrome (66144166).

The spelling of 16140005 in words is "sixteen million, one hundred forty thousand, five".