144404342 has 4 divisors (see below), whose sum is σ = 216606516. Its totient is φ = 72202170.

The previous prime is 144404333. The next prime is 144404353. The reversal of 144404342 is 243404441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×144404342² = 41705227976905928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101084 + ... + 36101087.

It is an arithmetic number, because the mean of its divisors is an integer number (54151629).

Almost surely, 2^144404342 is an apocalyptic number.

144404342 is a deficient number, since it is larger than the sum of its proper divisors (72202174).

144404342 is an equidigital number, since it uses as much as digits as its factorization.

144404342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72202173.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 144404342 is about 12016.8357731975. The cubic root of 144404342 is about 524.6384110312.

Adding to 144404342 its reverse (243404441), we get a palindrome (387808783).

Subtracting 144404342 from its reverse (243404441), we obtain a palindrome (99000099).

The spelling of 144404342 in words is "one hundred forty-four million, four hundred four thousand, three hundred forty-two".