144415421 has 8 divisors (see below), whose sum is σ = 147752640. Its totient is φ = 141107968.

The previous prime is 144415387. The next prime is 144415441. The reversal of 144415421 is 124514441.

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 144415421 - 2¹⁰ = 144414397 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 (144415441) 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, 2525 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (18469080).

Almost surely, 2^144415421 is an apocalyptic number.

It is an amenable number.

144415421 is a deficient number, since it is larger than the sum of its proper divisors (3337219).

144415421 is a wasteful number, since it uses less digits than its factorization.

144415421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14883.

The product of its digits is 2560, while the sum is 26.

The square root of 144415421 is about 12017.2967426123. The cubic root of 144415421 is about 524.6518278030.

Adding to 144415421 its reverse (124514441), we get a palindrome (268929862).

The spelling of 144415421 in words is "one hundred forty-four million, four hundred fifteen thousand, four hundred twenty-one".