144243281 has 16 divisors (see below), whose sum is σ = 185251584. Its totient is φ = 109162944.

The previous prime is 144243271. The next prime is 144243299. The reversal of 144243281 is 182342441.

It is a cyclic number.

It is not a de Polignac number, because 144243281 - 2¹⁰ = 144242257 is a prime.

It is a super-2 number, since 2×144243281² = 41612248227289922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144243241) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 32366 + ... + 36551.

It is an arithmetic number, because the mean of its divisors is an integer number (11578224).

Almost surely, 2^144243281 is an apocalyptic number.

It is an amenable number.

144243281 is a deficient number, since it is larger than the sum of its proper divisors (41008303).

144243281 is a wasteful number, since it uses less digits than its factorization.

144243281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68960.

The product of its digits is 6144, while the sum is 29.

The square root of 144243281 is about 12010.1324305771. The cubic root of 144243281 is about 524.4432871159.

The spelling of 144243281 in words is "one hundred forty-four million, two hundred forty-three thousand, two hundred eighty-one".