16210139 has 4 divisors (see below), whose sum is σ = 17683800. Its totient is φ = 14736480.

The previous prime is 16210127. The next prime is 16210141. The reversal of 16210139 is 93101261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16210139 - 2¹⁶ = 16144603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16210199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736814 + ... + 736835.

It is an arithmetic number, because the mean of its divisors is an integer number (4420950).

Almost surely, 2^16210139 is an apocalyptic number.

16210139 is a deficient number, since it is larger than the sum of its proper divisors (1473661).

16210139 is a wasteful number, since it uses less digits than its factorization.

16210139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473660.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 16210139 is about 4026.1816898893. The cubic root of 16210139 is about 253.0825760126.

It can be divided in two parts, 162 and 10139, that added together give a palindrome (10301).

The spelling of 16210139 in words is "sixteen million, two hundred ten thousand, one hundred thirty-nine".