144444442 has 8 divisors (see below), whose sum is σ = 221276736. Its totient is φ = 70685532.

The previous prime is 144444437. The next prime is 144444457. The reversal of 144444442 is 244444441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768228 + ... + 768415.

It is an arithmetic number, because the mean of its divisors is an integer number (27659592).

Almost surely, 2^144444442 is an apocalyptic number.

144444442 is a deficient number, since it is larger than the sum of its proper divisors (76832294).

144444442 is a wasteful number, since it uses less digits than its factorization.

144444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536692.

The product of its digits is 32768, while the sum is 31.

The square root of 144444442 is about 12018.5041498516. The cubic root of 144444442 is about 524.6869692507.

Adding to 144444442 its reverse (244444441), we get a palindrome (388888883).

Subtracting 144444442 from its reverse (244444441), we obtain a palindrome (99999999).

The spelling of 144444442 in words is "one hundred forty-four million, four hundred forty-four thousand, four hundred forty-two".