142045042 has 4 divisors (see below), whose sum is σ = 213067566. Its totient is φ = 71022520.

The previous prime is 142045021. The next prime is 142045049. The reversal of 142045042 is 240540241.

It is a happy number.

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., 132503121 + 9541921 = 11511^2 + 3089^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142045049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35511259 + ... + 35511262.

Almost surely, 2^142045042 is an apocalyptic number.

142045042 is a deficient number, since it is larger than the sum of its proper divisors (71022524).

142045042 is an equidigital number, since it uses as much as digits as its factorization.

142045042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71022523.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 142045042 is about 11918.2650583044. The cubic root of 142045042 is about 521.7655004802.

Adding to 142045042 its reverse (240540241), we get a palindrome (382585283).

The spelling of 142045042 in words is "one hundred forty-two million, forty-five thousand, forty-two".