142565044 has 24 divisors (see below), whose sum is σ = 258972840. Its totient is φ = 68589696.

The previous prime is 142565041. The next prime is 142565083. The reversal of 142565044 is 440565241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1444 + 142563600 = 38^2 + 11940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142564997 and 142565015.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 34834 + ... + 38710.

It is an arithmetic number, because the mean of its divisors is an integer number (10790535).

Almost surely, 2^142565044 is an apocalyptic number.

It is an amenable number.

142565044 is a deficient number, since it is larger than the sum of its proper divisors (116407796).

142565044 is a wasteful number, since it uses less digits than its factorization.

142565044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 142565044 is about 11940.0604688586. The cubic root of 142565044 is about 522.4014224567.

The spelling of 142565044 in words is "one hundred forty-two million, five hundred sixty-five thousand, forty-four".