142250665 has 16 divisors (see below), whose sum is σ = 175101696. Its totient is φ = 110880000.

The previous prime is 142250659. The next prime is 142250677. The reversal of 142250665 is 566052241.

It is not a de Polignac number, because 142250665 - 2³ = 142250657 is a prime.

It is a Duffinian number.

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 in 15 ways as a sum of consecutive naturals, for example, 161025 + ... + 161905.

It is an arithmetic number, because the mean of its divisors is an integer number (10943856).

Almost surely, 2^142250665 is an apocalyptic number.

It is an amenable number.

142250665 is a deficient number, since it is larger than the sum of its proper divisors (32851031).

142250665 is an equidigital number, since it uses as much as digits as its factorization.

142250665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 142250665 is about 11926.8883200942. Note that the first 3 decimals coincide. The cubic root of 142250665 is about 522.0171466209.

The spelling of 142250665 in words is "one hundred forty-two million, two hundred fifty thousand, six hundred sixty-five".