144102181 has 2 divisors, whose sum is σ = 144102182. Its totient is φ = 144102180.

The previous prime is 144102163. The next prime is 144102263. The reversal of 144102181 is 181201441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81613156 + 62489025 = 9034^2 + 7905^2 .

It is a cyclic number.

It is not a de Polignac number, because 144102181 - 2¹⁹ = 143577893 is a prime.

It is a super-4 number, since 4×144102181⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144102281) 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 as a sum of consecutive naturals, namely, 72051090 + 72051091.

It is an arithmetic number, because the mean of its divisors is an integer number (72051091).

Almost surely, 2^144102181 is an apocalyptic number.

It is an amenable number.

144102181 is a deficient number, since it is larger than the sum of its proper divisors (1).

144102181 is an equidigital number, since it uses as much as digits as its factorization.

144102181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 144102181 is about 12004.2567866570. The cubic root of 144102181 is about 524.2722263700.

The spelling of 144102181 in words is "one hundred forty-four million, one hundred two thousand, one hundred eighty-one".