144142441 has 4 divisors (see below), whose sum is σ = 149112900. Its totient is φ = 139171984.

The previous prime is 144142409. The next prime is 144142463. The reversal of 144142441 is 144241441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144241441 = 23 ⋅6271367.

It can be written as a sum of positive squares in 2 ways, for example, as 29116816 + 115025625 = 5396^2 + 10725^2 .

It is a cyclic number.

It is not a de Polignac number, because 144142441 - 2⁵ = 144142409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144142241) 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 3 ways as a sum of consecutive naturals, for example, 2485186 + ... + 2485243.

It is an arithmetic number, because the mean of its divisors is an integer number (37278225).

Almost surely, 2^144142441 is an apocalyptic number.

It is an amenable number.

144142441 is a deficient number, since it is larger than the sum of its proper divisors (4970459).

144142441 is an equidigital number, since it uses as much as digits as its factorization.

144142441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970458.

The product of its digits is 2048, while the sum is 25.

The square root of 144142441 is about 12005.9335746955. The cubic root of 144142441 is about 524.3210464372.

Adding to 144142441 its reverse (144241441), we get a palindrome (288383882).

The spelling of 144142441 in words is "one hundred forty-four million, one hundred forty-two thousand, four hundred forty-one".