144530242 has 4 divisors (see below), whose sum is σ = 216795366. Its totient is φ = 72265120.

The previous prime is 144530233. The next prime is 144530249. The reversal of 144530242 is 242035441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242035441 = 1381 ⋅175261.

It can be written as a sum of positive squares in only one way, i.e., 113827561 + 30702681 = 10669^2 + 5541^2 .

It is not an unprimeable number, because it can be changed into a prime (144530249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36132559 + ... + 36132562.

Almost surely, 2^144530242 is an apocalyptic number.

144530242 is a deficient number, since it is larger than the sum of its proper divisors (72265124).

144530242 is an equidigital number, since it uses as much as digits as its factorization.

144530242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72265123.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144530242 is about 12022.0731157317. The cubic root of 144530242 is about 524.7908367093.

Adding to 144530242 its reverse (242035441), we get a palindrome (386565683).

The spelling of 144530242 in words is "one hundred forty-four million, five hundred thirty thousand, two hundred forty-two".