162342221 has 4 divisors (see below), whose sum is σ = 162928572. Its totient is φ = 161755872.

The previous prime is 162342209. The next prime is 162342227. The reversal of 162342221 is 122243261.

It is a happy number.

162342221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81090025 + 81252196 = 9005^2 + 9014^2 .

It is a cyclic number.

It is not a de Polignac number, because 162342221 - 2¹⁰ = 162341197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162342227) 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, 292760 + ... + 293313.

It is an arithmetic number, because the mean of its divisors is an integer number (40732143).

Almost surely, 2^162342221 is an apocalyptic number.

It is an amenable number.

162342221 is a deficient number, since it is larger than the sum of its proper divisors (586351).

162342221 is an equidigital number, since it uses as much as digits as its factorization.

162342221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586350.

The product of its digits is 1152, while the sum is 23.

The square root of 162342221 is about 12741.3586795130. The cubic root of 162342221 is about 545.5197701051.

Adding to 162342221 its reverse (122243261), we get a palindrome (284585482).

The spelling of 162342221 in words is "one hundred sixty-two million, three hundred forty-two thousand, two hundred twenty-one".