144344421 has 36 divisors (see below), whose sum is σ = 231124608. Its totient is φ = 86722272.

The previous prime is 144344419. The next prime is 144344471. The reversal of 144344421 is 124443441.

It is not a de Polignac number, because 144344421 - 2¹ = 144344419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144344471) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 64300 + ... + 66506.

It is an arithmetic number, because the mean of its divisors is an integer number (6420128).

Almost surely, 2^144344421 is an apocalyptic number.

It is an amenable number.

144344421 is a deficient number, since it is larger than the sum of its proper divisors (86780187).

144344421 is a wasteful number, since it uses less digits than its factorization.

144344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282 (or 2266 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 144344421 is about 12014.3423040964. The cubic root of 144344421 is about 524.5658342488.

Adding to 144344421 its reverse (124443441), we get a palindrome (268787862).

It can be divided in two parts, 1443 and 44421, that multiplied together give a triangular number (64099503 = T₁₁₃₂₂).

The spelling of 144344421 in words is "one hundred forty-four million, three hundred forty-four thousand, four hundred twenty-one".