142135265 has 4 divisors (see below), whose sum is σ = 170562324. Its totient is φ = 113708208.

The previous prime is 142135261. The next prime is 142135291. The reversal of 142135265 is 562531241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77862976 + 64272289 = 8824^2 + 8017^2 .

It is a cyclic number.

It is not a de Polignac number, because 142135265 - 2² = 142135261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142135261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14213522 + ... + 14213531.

It is an arithmetic number, because the mean of its divisors is an integer number (42640581).

Almost surely, 2^142135265 is an apocalyptic number.

It is an amenable number.

142135265 is a deficient number, since it is larger than the sum of its proper divisors (28427059).

142135265 is an equidigital number, since it uses as much as digits as its factorization.

142135265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28427058.

The product of its digits is 7200, while the sum is 29.

The square root of 142135265 is about 11922.0495301773. The cubic root of 142135265 is about 521.8759473371.

The spelling of 142135265 in words is "one hundred forty-two million, one hundred thirty-five thousand, two hundred sixty-five".