144842661 has 20 divisors (see below), whose sum is σ = 225780192. Its totient is φ = 92362248.

The previous prime is 144842653. The next prime is 144842701. The reversal of 144842661 is 166248441.

It is a happy number.

It is not a de Polignac number, because 144842661 - 2³ = 144842653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144842641) 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 19 ways as a sum of consecutive naturals, for example, 37011 + ... + 40736.

Almost surely, 2^144842661 is an apocalyptic number.

It is an amenable number.

144842661 is a deficient number, since it is larger than the sum of its proper divisors (80937531).

144842661 is an equidigital number, since it uses as much as digits as its factorization.

144842661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77782 (or 77773 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 144842661 is about 12035.0596591791. The cubic root of 144842661 is about 525.1686968077.

The spelling of 144842661 in words is "one hundred forty-four million, eight hundred forty-two thousand, six hundred sixty-one".