144727441 has 4 divisors (see below), whose sum is σ = 147100084. Its totient is φ = 142354800.

The previous prime is 144727423. The next prime is 144727459.

144727441 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (144727423) and next prime (144727459).

It can be written as a sum of positive squares in 2 ways, for example, as 12960000 + 131767441 = 3600^2 + 11479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144727441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144727397 and 144727406.

It is not an unprimeable number, because it can be changed into a prime (144727421) 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 3 ways as a sum of consecutive naturals, for example, 1186230 + ... + 1186351.

It is an arithmetic number, because the mean of its divisors is an integer number (36775021).

Almost surely, 2^144727441 is an apocalyptic number.

It is an amenable number.

144727441 is a deficient number, since it is larger than the sum of its proper divisors (2372643).

144727441 is an equidigital number, since it uses as much as digits as its factorization.

144727441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372642.

The product of its digits is 25088, while the sum is 34.

The square root of 144727441 is about 12030.2718589398. The cubic root of 144727441 is about 525.0294054580.

The spelling of 144727441 in words is "one hundred forty-four million, seven hundred twenty-seven thousand, four hundred forty-one".