144542042 has 4 divisors (see below), whose sum is σ = 216813066. Its totient is φ = 72271020.

The previous prime is 144541997. The next prime is 144542131. The reversal of 144542042 is 240245441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240245441 = 1063 ⋅226007.

It can be written as a sum of positive squares in only one way, i.e., 95667961 + 48874081 = 9781^2 + 6991^2 .

It is an unprimeable number.

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, 36135509 + ... + 36135512.

Almost surely, 2^144542042 is an apocalyptic number.

144542042 is a deficient number, since it is larger than the sum of its proper divisors (72271024).

144542042 is an equidigital number, since it uses as much as digits as its factorization.

144542042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72271023.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 144542042 is about 12022.5638696578. The cubic root of 144542042 is about 524.8051182956.

Adding to 144542042 its reverse (240245441), we get a palindrome (384787483).

The spelling of 144542042 in words is "one hundred forty-four million, five hundred forty-two thousand, forty-two".