16140235 has 4 divisors (see below), whose sum is σ = 19368288. Its totient is φ = 12912184.

The previous prime is 16140221. The next prime is 16140247. The reversal of 16140235 is 53204161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53204161 = 19 ⋅2800219.

It is a cyclic number.

It is not a de Polignac number, because 16140235 - 2⁹ = 16139723 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614019 + ... + 1614028.

It is an arithmetic number, because the mean of its divisors is an integer number (4842072).

Almost surely, 2^16140235 is an apocalyptic number.

16140235 is a deficient number, since it is larger than the sum of its proper divisors (3228053).

16140235 is an equidigital number, since it uses as much as digits as its factorization.

16140235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228052.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16140235 is about 4017.4911325353. The cubic root of 16140235 is about 252.7182571914.

Adding to 16140235 its reverse (53204161), we get a palindrome (69344396).

The spelling of 16140235 in words is "sixteen million, one hundred forty thousand, two hundred thirty-five".