16212146 has 4 divisors (see below), whose sum is σ = 24318222. Its totient is φ = 8106072.

The previous prime is 16212139. The next prime is 16212173. The reversal of 16212146 is 64121261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64121261 = 269 ⋅238369.

It can be written as a sum of positive squares in only one way, i.e., 9765625 + 6446521 = 3125^2 + 2539^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4053035 + ... + 4053038.

Almost surely, 2^16212146 is an apocalyptic number.

16212146 is a deficient number, since it is larger than the sum of its proper divisors (8106076).

16212146 is an equidigital number, since it uses as much as digits as its factorization.

16212146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8106075.

The product of its digits is 576, while the sum is 23.

The square root of 16212146 is about 4026.4309257704. The cubic root of 16212146 is about 253.0930204176.

The spelling of 16212146 in words is "sixteen million, two hundred twelve thousand, one hundred forty-six".