144216081 has 9 divisors (see below), whose sum is σ = 208364169. Its totient is φ = 96120036.

The previous prime is 144216071. The next prime is 144216089. The reversal of 144216081 is 180612441.

It is a happy number.

The square root of 144216081 is 12009.

It is a perfect power (a square), and thus also a powerful number.

144216081 is a `hidden beast` number, since 14 + 42 + 1 + 608 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 144216081 - 2⁹ = 144215569 is a prime.

It is a super-2 number, since 2×144216081² = 41596556037997122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144216089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34026 + ... + 38028.

Almost surely, 2^144216081 is an apocalyptic number.

144216081 is the 12009-th square number.

144216081 is the 6005-th centered octagonal number.

It is an amenable number.

144216081 is a deficient number, since it is larger than the sum of its proper divisors (64148088).

144216081 is an frugal number, since it uses more digits than its factorization.

144216081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8012 (or 4006 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The cubic root of 144216081 is about 524.4103202328.

It can be divided in two parts, 14421 and 6081, that added together give a palindrome (20502).

The spelling of 144216081 in words is "one hundred forty-four million, two hundred sixteen thousand, eighty-one".