144406241 has 4 divisors (see below), whose sum is σ = 165035712. Its totient is φ = 123776772.

The previous prime is 144406219. The next prime is 144406247. The reversal of 144406241 is 142604441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142604441 = 7 ⋅20372063.

It is a de Polignac number, because none of the positive numbers 2^k-144406241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144406241.

It is not an unprimeable number, because it can be changed into a prime (144406247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10314725 + ... + 10314738.

It is an arithmetic number, because the mean of its divisors is an integer number (41258928).

Almost surely, 2^144406241 is an apocalyptic number.

It is an amenable number.

144406241 is a deficient number, since it is larger than the sum of its proper divisors (20629471).

144406241 is an equidigital number, since it uses as much as digits as its factorization.

144406241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20629470.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 144406241 is about 12016.9147870824. The cubic root of 144406241 is about 524.6407107865.

The spelling of 144406241 in words is "one hundred forty-four million, four hundred six thousand, two hundred forty-one".