146209 has 4 divisors (see below), whose sum is σ = 167104. Its totient is φ = 125316.

The previous prime is 146203. The next prime is 146213. The reversal of 146209 is 902641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 902641 = 59 ⋅15299.

It is a cyclic number.

It is not a de Polignac number, because 146209 - 2¹¹ = 144161 is a prime.

146209 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 146209.

It is not an unprimeable number, because it can be changed into a prime (146203) 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, 10437 + ... + 10450.

It is an arithmetic number, because the mean of its divisors is an integer number (41776).

2¹⁴⁶²⁰⁹ is an apocalyptic number.

It is an amenable number.

146209 is a deficient number, since it is larger than the sum of its proper divisors (20895).

146209 is an equidigital number, since it uses as much as digits as its factorization.

146209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20894.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 146209 is about 382.3728546851. The cubic root of 146209 is about 52.6814882887.

Adding to 146209 its product of nonzero digits (432), we get a palindrome (146641).

The spelling of 146209 in words is "one hundred forty-six thousand, two hundred nine".