144123641 has 2 divisors, whose sum is σ = 144123642. Its totient is φ = 144123640.

The previous prime is 144123631. The next prime is 144123643. The reversal of 144123641 is 146321441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126450025 + 17673616 = 11245^2 + 4204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144123641 is a prime.

It is a Sophie Germain prime.

Together with 144123643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144123641.

It is not a weakly prime, because it can be changed into another prime (144123643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72061820 + 72061821.

It is an arithmetic number, because the mean of its divisors is an integer number (72061821).

Almost surely, 2^144123641 is an apocalyptic number.

It is an amenable number.

144123641 is a deficient number, since it is larger than the sum of its proper divisors (1).

144123641 is an equidigital number, since it uses as much as digits as its factorization.

144123641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 144123641 is about 12005.1506029704. The cubic root of 144123641 is about 524.2982503192.

The spelling of 144123641 in words is "one hundred forty-four million, one hundred twenty-three thousand, six hundred forty-one".