144213421 has 8 divisors (see below), whose sum is σ = 157794624. Its totient is φ = 130710720.

The previous prime is 144213367. The next prime is 144213451. The reversal of 144213421 is 124312441.

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 144213421 - 2¹⁵ = 144180653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144213392 and 144213401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144213451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15745 + ... + 23158.

It is an arithmetic number, because the mean of its divisors is an integer number (19724328).

Almost surely, 2^144213421 is an apocalyptic number.

144213421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144213421 is a deficient number, since it is larger than the sum of its proper divisors (13581203).

144213421 is a wasteful number, since it uses less digits than its factorization.

144213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39251.

The product of its digits is 768, while the sum is 22.

The square root of 144213421 is about 12008.8892492187. The cubic root of 144213421 is about 524.4070960431.

Adding to 144213421 its reverse (124312441), we get a palindrome (268525862).

The spelling of 144213421 in words is "one hundred forty-four million, two hundred thirteen thousand, four hundred twenty-one".