144012421 has 12 divisors (see below), whose sum is σ = 167886432. Its totient is φ = 123172728.

The previous prime is 144012403. The next prime is 144012439. The reversal of 144012421 is 124210441.

It is an interprime number because it is at equal distance from previous prime (144012403) and next prime (144012439).

It is not a de Polignac number, because 144012421 - 2¹⁵ = 143979653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144010421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21726 + ... + 27568.

It is an arithmetic number, because the mean of its divisors is an integer number (13990536).

Almost surely, 2^144012421 is an apocalyptic number.

It is an amenable number.

144012421 is a deficient number, since it is larger than the sum of its proper divisors (23874011).

144012421 is an equidigital number, since it uses as much as digits as its factorization.

144012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360 (or 6353 counting only the distinct ones).

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

The square root of 144012421 is about 12000.5175305068. The cubic root of 144012421 is about 524.1633488848.

Adding to 144012421 its reverse (124210441), we get a palindrome (268222862).

It can be divided in two parts, 1440 and 12421, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 144012421 in words is "one hundred forty-four million, twelve thousand, four hundred twenty-one".