144021242 has 16 divisors (see below), whose sum is σ = 225637920. Its totient is φ = 68874768.

The previous prime is 144021209. The next prime is 144021277. The reversal of 144021242 is 242120441.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12128 + ... + 20859.

It is an arithmetic number, because the mean of its divisors is an integer number (14102370).

Almost surely, 2^144021242 is an apocalyptic number.

144021242 is a deficient number, since it is larger than the sum of its proper divisors (81616678).

144021242 is a wasteful number, since it uses less digits than its factorization.

144021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33085.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 144021242 is about 12000.8850506952. The cubic root of 144021242 is about 524.1740506249.

Adding to 144021242 its reverse (242120441), we get a palindrome (386141683).

The spelling of 144021242 in words is "one hundred forty-four million, twenty-one thousand, two hundred forty-two".