144241421 has 4 divisors (see below), whose sum is σ = 144751392. Its totient is φ = 143731452.

The previous prime is 144241411. The next prime is 144241423. The reversal of 144241421 is 124142441.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144241421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144241423) 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, 254561 + ... + 255126.

It is an arithmetic number, because the mean of its divisors is an integer number (36187848).

Almost surely, 2^144241421 is an apocalyptic number.

It is an amenable number.

144241421 is a deficient number, since it is larger than the sum of its proper divisors (509971).

144241421 is an equidigital number, since it uses as much as digits as its factorization.

144241421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509970.

The product of its digits is 1024, while the sum is 23.

The square root of 144241421 is about 12010.0549957109. The cubic root of 144241421 is about 524.4410328949.

Adding to 144241421 its reverse (124142441), we get a palindrome (268383862).

The spelling of 144241421 in words is "one hundred forty-four million, two hundred forty-one thousand, four hundred twenty-one".