144023445 has 18 divisors (see below), whose sum is σ = 249780258. Its totient is φ = 76769568.

The previous prime is 144023443. The next prime is 144023491. The reversal of 144023445 is 544320441.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 84162276 + 59861169 = 9174^2 + 7737^2 .

It is not a de Polignac number, because 144023445 - 2¹ = 144023443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144023441) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 79611 + ... + 81399.

It is an arithmetic number, because the mean of its divisors is an integer number (13876681).

Almost surely, 2^144023445 is an apocalyptic number.

144023445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144023445 is a deficient number, since it is larger than the sum of its proper divisors (105756813).

144023445 is an frugal number, since it uses more digits than its factorization.

144023445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 144023445 is about 12000.9768352414. The cubic root of 144023445 is about 524.1767232620.

Adding to 144023445 its reverse (544320441), we get a palindrome (688343886).

The spelling of 144023445 in words is "one hundred forty-four million, twenty-three thousand, four hundred forty-five".