144201421 has 16 divisors (see below), whose sum is σ = 185197824. Its totient is φ = 109131264.

The previous prime is 144201413. The next prime is 144201443. The reversal of 144201421 is 124102441.

It is a cyclic number.

It is not a de Polignac number, because 144201421 - 2³ = 144201413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144201451) 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 15 ways as a sum of consecutive naturals, for example, 32356 + ... + 36541.

It is an arithmetic number, because the mean of its divisors is an integer number (11574864).

Almost surely, 2^144201421 is an apocalyptic number.

It is an amenable number.

144201421 is a deficient number, since it is larger than the sum of its proper divisors (40996403).

144201421 is a wasteful number, since it uses less digits than its factorization.

144201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68940.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 144201421 is about 12008.3896089359. The cubic root of 144201421 is about 524.3925503333.

Adding to 144201421 its reverse (124102441), we get a palindrome (268303862).

The spelling of 144201421 in words is "one hundred forty-four million, two hundred one thousand, four hundred twenty-one".