144403421 has 8 divisors (see below), whose sum is σ = 146815488. Its totient is φ = 142002000.

The previous prime is 144403403. The next prime is 144403433. The reversal of 144403421 is 124304441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144403421 - 2²² = 140209117 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 (144403451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27476 + ... + 32306.

It is an arithmetic number, because the mean of its divisors is an integer number (18351936).

Almost surely, 2^144403421 is an apocalyptic number.

It is an amenable number.

144403421 is a deficient number, since it is larger than the sum of its proper divisors (2412067).

144403421 is an equidigital number, since it uses as much as digits as its factorization.

144403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 144403421 is about 12016.7974519004. The cubic root of 144403421 is about 524.6372956607.

Adding to 144403421 its reverse (124304441), we get a palindrome (268707862).

The spelling of 144403421 in words is "one hundred forty-four million, four hundred three thousand, four hundred twenty-one".