144442161 has 24 divisors (see below), whose sum is σ = 222287520. Its totient is φ = 90118656.

The previous prime is 144442159. The next prime is 144442169. The reversal of 144442161 is 161244441.

144442161 is a `hidden beast` number, since 1 + 4 + 444 + 216 + 1 = 666.

It is not a de Polignac number, because 144442161 - 2¹ = 144442159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144442169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9105 + ... + 19281.

It is an arithmetic number, because the mean of its divisors is an integer number (9261980).

Almost surely, 2^144442161 is an apocalyptic number.

It is an amenable number.

144442161 is a deficient number, since it is larger than the sum of its proper divisors (77845359).

144442161 is a wasteful number, since it uses less digits than its factorization.

144442161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10285 (or 10282 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 144442161 is about 12018.4092541401. The cubic root of 144442161 is about 524.6842073646.

The spelling of 144442161 in words is "one hundred forty-four million, four hundred forty-two thousand, one hundred sixty-one".