144413442 has 56 divisors (see below), whose sum is σ = 333684156. Its totient is φ = 46819296.

The previous prime is 144413387. The next prime is 144413473. The reversal of 144413442 is 244314441.

It can be written as a sum of positive squares in 2 ways, for example, as 143065521 + 1347921 = 11961^2 + 1161^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 52608 + ... + 55284.

Almost surely, 2^144413442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144413442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166842078).

144413442 is an abundant number, since it is smaller than the sum of its proper divisors (189270714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144413442 is an equidigital number, since it uses as much as digits as its factorization.

144413442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 2719 counting only the distinct ones).

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

The square root of 144413442 is about 12017.2144026808. The cubic root of 144413442 is about 524.6494312660.

Adding to 144413442 its reverse (244314441), we get a palindrome (388727883).

Subtracting 144413442 from its reverse (244314441), we obtain a palindrome (99900999).

The spelling of 144413442 in words is "one hundred forty-four million, four hundred thirteen thousand, four hundred forty-two".