144423242 has 4 divisors (see below), whose sum is σ = 216634866. Its totient is φ = 72211620.

The previous prime is 144423239. The next prime is 144423263. The reversal of 144423242 is 242324441.

It is a happy number.

144423242 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 137616361 + 6806881 = 11731^2 + 2609^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36105809 + ... + 36105812.

Almost surely, 2^144423242 is an apocalyptic number.

144423242 is a deficient number, since it is larger than the sum of its proper divisors (72211624).

144423242 is an equidigital number, since it uses as much as digits as its factorization.

144423242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72211623.

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

The square root of 144423242 is about 12017.6221441681. The cubic root of 144423242 is about 524.6612986934.

Adding to 144423242 its reverse (242324441), we get a palindrome (386747683).

The spelling of 144423242 in words is "one hundred forty-four million, four hundred twenty-three thousand, two hundred forty-two".