144242446 has 4 divisors (see below), whose sum is σ = 216363672. Its totient is φ = 72121222.

The previous prime is 144242431. The next prime is 144242447. The reversal of 144242446 is 644242441.

144242446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644242441 = 13147 ⋅49003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144242447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36060610 + ... + 36060613.

It is an arithmetic number, because the mean of its divisors is an integer number (54090918).

Almost surely, 2^144242446 is an apocalyptic number.

144242446 is a deficient number, since it is larger than the sum of its proper divisors (72121226).

144242446 is an equidigital number, since it uses as much as digits as its factorization.

144242446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72121225.

The product of its digits is 24576, while the sum is 31.

The square root of 144242446 is about 12010.0976682124. The cubic root of 144242446 is about 524.4422751428.

Adding to 144242446 its reverse (644242441), we get a palindrome (788484887).

The spelling of 144242446 in words is "one hundred forty-four million, two hundred forty-two thousand, four hundred forty-six".