142565042 has 4 divisors (see below), whose sum is σ = 213847566. Its totient is φ = 71282520.

The previous prime is 142565041. The next prime is 142565083. The reversal of 142565042 is 240565241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240565241 = 7 ⋅34366463.

It can be written as a sum of positive squares in only one way, i.e., 95628841 + 46936201 = 9779^2 + 6851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142564996 and 142565014.

It is not an unprimeable number, because it can be changed into a prime (142565041) 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, 35641259 + ... + 35641262.

Almost surely, 2^142565042 is an apocalyptic number.

142565042 is a deficient number, since it is larger than the sum of its proper divisors (71282524).

142565042 is an equidigital number, since it uses as much as digits as its factorization.

142565042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71282523.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 142565042 is about 11940.0603851069. The cubic root of 142565042 is about 522.4014200139.

The spelling of 142565042 in words is "one hundred forty-two million, five hundred sixty-five thousand, forty-two".