144212661 has 12 divisors (see below), whose sum is σ = 208422240. Its totient is φ = 96088680.

The previous prime is 144212659. The next prime is 144212671. The reversal of 144212661 is 166212441.

It is not a de Polignac number, because 144212661 - 2¹ = 144212659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144212611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19696 + ... + 26006.

It is an arithmetic number, because the mean of its divisors is an integer number (17368520).

Almost surely, 2^144212661 is an apocalyptic number.

It is an amenable number.

144212661 is a deficient number, since it is larger than the sum of its proper divisors (64209579).

144212661 is a wasteful number, since it uses less digits than its factorization.

144212661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856 (or 8853 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 144212661 is about 12008.8576059507. The cubic root of 144212661 is about 524.4061748388.

The spelling of 144212661 in words is "one hundred forty-four million, two hundred twelve thousand, six hundred sixty-one".